Low Pressure Die Casting

Inox Casting is your remarkable Low-Pressure Die Casting services professional. We have an accumulated 20 years of development and experience in this field. Send your requirements now!

  • Handle Low-Pressure Die Casting job perfectly
  • Ensure maximum customer satisfaction and product quality
  • ISO9001:2008 certified and conforms to TS 16949 quality management systems
  • Supported by skilled senior managerial and technical personnel

Why Inox is a Professional Low Pressure Die Casting Provider

If you`re looking for the best provider of Low-Pressure Die Casting Services, you can count on Inox Casting. We have more than 20 years of experience in unique R&D prototype designing, low-pressure die casting moulding, cold chamber die casting, machining, polishing, and coating of finished products. You can also personalize your desired die cast products with your own specifications. We are your one-stop die cast expert company!

1 Aluminium Low pressure Die Casting
Aluminium Low pressure Die Casting

For our aluminum low-pressure die casting, we usually used high-quality aluminum materials.

2 Easy Assembly Low pressure Die Casting
Easy Assembly Low pressure Die Casting

Our aluminum low-pressure die casting ensures that the products we manufacture are corrosion-resistant, accurately, defined, smooth surface, etc.

3 Zinc Low pressure Die Casting
Zinc Low pressure Die Casting

Zinc Low pressure Die Casting is a simple process as it maintains high strength at room temperature. Parts created through Low pressure Die Casting deliver a long performance life.

4 Custom Low pressure Die Casting
Custom Low pressure Die Casting

Custom Low pressure Die Casting is available at Inox casting. According to your idea, material chosen, dimensional, designs, applications, we can produce it for you.

5 Low pressure Die Casting Price
Low pressure Die Casting Price

Inox Low pressure Die Casting has an excellent capability resulting in the ability to achieve high-quality finishing features.

6 Low pressure Die Casting Manufacturing
Low pressure Die Casting Manufacturing

When picking the right alloy to use for your die-cast, Inox`s engineers evaluate the mechanical properties of low-pressure die-casting alloys such as hardness, strength, and elongation.

7 Permanent Mold Casting Low pressure Die Casting
Low pressure Permanent Mold Casting

Inox Low-pressure Permanent Mold Casting allows a high volume of die casting parts to be produced very efficiently.

8 OEM Services for Low pressure Die Casting
OEM Services for Low pressure Die Casting

We can support your OEM orders for Low-pressure Die Casting products manufacturing. The process is relatively simple and can save you money.

9 Low pressure Die Casting Parts
Low pressure Die Casting Parts

Low pressure Die Casting Parts can be applied in a wide range of applications including telecommunications, medical equipment, consumer electronics,  household Appliances, etc.

10 Easy form Low pressure Die Casting
Easy form Low pressure Die Casting

We can easily form your die cast parts using low-pressure die casting. Die-casted components are durable, have higher heat resistance, and more dimensionally stable.

12 Cost-Effective Low pressure Die Casting
Cost-Effective Low pressure Die Casting

You can avail the most cost-effective Low pressure Die Casting services in Inox Casting. Even it’s affordable it doesn’t compromise the quality and stability of products.

Advantages of Low-Pressure Die Casting

High Accuracy
High Accuracy

Part production using LPDC offers high accuracy due to the low-pressure stability in solidification operation. Plus, ideal for forming axial parts.

Pure Casting
Pure Casting

The low-pressure die casting achieves extreme pureness because of fewer to no slag liability. It reduces the chances of slag entering the mold.

Good Formability
Good Formability

Due to the development of liquid metal fluidity, the low-pressure process achieves good formability, fulfilling smooth surfaces and clean outlines.

Compact Structure
Compact Structure

The solidified cast parts with low pressure crystallize and creates compact structures. That makes them suitable for forming parts with high strength.

How Does it Work

The following illustrates the needed equipment and setups for low-pressure die casting.

  • The process starts with melting furnaces, melting the metals and leading them to cast temperatures. 
  • Next, the molten metals will proceed under the mold-holding furnace. That serves as a container while keeping the liquid metals at the casting temperature.
  • The molten metals are forced at low pressure by a riser tube to the mold. And then, the liquid metals flow below stable pressure until they solidify inside the cavity.
  • After solidification, the pressure is discharged while the excess molten metals return to the recycling holding furnace. 
  • And finally, when the mold is unheated, the casted metals will be removed effortlessly.
Low Pressure Die Casting
Low Pressure Die Casting

Materials Involved

Various materials work well with low-pressure die-casting. Consider the following:

  • Alloy cast iron
  • Steel
  • Magnesium
  • Aluminum
  • Copper
  • more

Low-Pressure Die Casting for Auto Industry

The low-pressure die casting parts for the automotive industry create high-quality and rigid aluminum casts. But since they have a relatively slow casting technique, their purpose is initially limited to automotive markets with luxury class. However, the automotive industry finds ways and minimizes the casting time to achieve a cost-effective LPDC method. 

Low-pressure die casting produces most automotive components, like wheels, engine blocks, and suspension parts. The auto industry also benefits from LPDC’s high volume yields, distinctive metallurgic quality, and cost-effective machining. Aside from the automotive industry, the electronic field utilizes an effective but low-cost die casting process.

Low Pressure Die Casting

Low-Pressure Die Casting vs. High-Pressure Die Casting

Cycle Time

The low-pressure die casting has about 0.7 bar to 1 bar pressure range, while the high-pressure casting ones have over 1000 bars pressures.

Therefore the LPDC has a lower cycle time compared to high-pressure die-casting.

Parts’ Strength

The components that are formed by LPDC have high strength. The high strength achieves since the metal solidification happens below stable pressure, creating compact and high-density parts’ structures.

On the other hand, high-pressure die casting also fulfills excellent parts’ strengths. However, the high-pressure die casting involves high pressure and fast time, so their parts are not comparable. 

Casting Quality

The castings formed using lesser pressure achieves higher quality compared to high-pressure ones. Low-pressure die casting is purer because of fewer slag amounts without pores.

On the other side, the high-pressure ones have the potential pores caused by high pressure and injected slags into the cavity.


Since low-pressure die casting requires fewer machines, the high-pressure ones incur higher investment and operating costs. However, the parts made from high-pressure die casting have lower prices due to their quick cycle time.


The LPDC is the ideal technique for creating thick metal parts and is not applicable for thin-wall components. However, the high-pressure die casting is suitable for forming thin walls.

Low Pressure Die Casting
Inox - Your Low-Pressure Die Casting Parts Supplier

Inox offers low-pressure die casting assistance and services. We also provide a comprehensive range of manufacturing services, including 3D printing, metal fabrication, and CNC machining that fulfills your desires and project requirements. We are along with our professional engineering team and certified facilities.

Inox Low Pressure Die Casting

4 Custom Low pressure Die Casting6 Low pressure Die Casting Manufacturing5 Low pressure Die Casting Price2 Easy Assembly Low pressure Die Casting

Inox Low Pressure Die Casting

Inox is a trusted partner in the broad casting industry. Our expertise specialized in industries such as electrical, automotive, aerospace, firearms, machine tools, and R&D applications.

Inox low pressure die casting is an effective method of manufacturing that uses pressure to top up mold designs with molten aluminum metal and magnesium metal.

There are many advantages the low pressure die casting method has offered. This effective process allows accurate control of the filling method. By this way of injecting molting metal, it reduces porosity and oxide formation, guarantee excellent stability from top to bottom.

For instance, low pressure die casting end results provide strength values, superior density, and superior dimensional precision. While this process is better equipped with symmetrical forms and more composite geometries that can be accomplished by applying sand cores in the molds.

Moreover, the automotive industry has depended on low-pressure die casting for over a decade to produce high-quality and strong cast products. This is a more cost-efficient, far more economical, and space-saving method.

Since low-pressure die casting is a great choice for automotive parts including wheels, suspension parts, and engine blocks, this is the best process option.

On the other hand, there are several benefits this process has been offering. High volume yield, exceptional metallurgic quality, and lower machining price are some of the method`s prime advantages.

Final products from low pressure die casting process is particularly heavy-duty and light in weight. It is also completely protected from dirt, light, and moisture. Widely applicable and customizable, this helps to have high utility and efficient production process.

Inox can be your trusted partner for scientific research institutions and for your business. We are professionals to conduct application and R&D testing production.

Low-Pressure Die Casting: The Ultimate FAQ Guide

Probably, you are wondering how low pressure die casting process works.

Or, you would like to know when to use low-pressure die casting.

A reason this guide explores everything you need to know about low-pressure die casting.

So, keep reading to learn more.

What Is Low-Pressure Die Casting?

Low pressure die casting is a technique of creation that utilizes pressure other than gravity to permeate molds with smelted metals.

In this technique the holding furnace is situated beneath melted metal and cast is compelled in ascension through tube riser and into the chamber.

Pressure is exerted consciously, sometimes expanding gains to occupy mold and ensure the metal is in place within die until it cools.

Once solidification of the cast is done pressure is discharged and the remaining liquid in the tube streams back into the holding furnace for reuse.

 A Low Pressure Die Casting Machine

A Low pressure Die Casting Machine

When Should You Opt For Low-Pressure Die Casting?

When one has to manufacture a complex form, interior galleries like a liquid jacket, irregular oil galleries, input, and output parts form.

Where the center restrictions are not attainable in this situation one utilizes the low pressure die casting it is considered here.

When designing complicated and interior forms, the sand core are utilized, which is removed by hammering after solidifying of parts evading any deformity.

What Are The Disadvantages Of Low-Pressure Die Casting?

It gives inconvenience when it comes to the investment part as it requires big investments in the equipment and the molds.

In the manufacture of aluminum alloy castings, the vessel and riser are in touch with melted metal for an expanded period.

Which is quick to be corroded and flaked and will also escalate the iron content of melted metal and depreciate the execution.

It’s not suitable for every matter as of impediment of die matter and alloys utilization must have actually low melting point.

Another disadvantage is that the feeding slender divisions through thick divisions are actually not permissive thus casting a weight scale of 25kg-5kg.

There’s usually elevated penetrability which is very common and when it comes to heat treatment it is actually not simple.

Reasonably correct economical quantity scale is more than one thousand and casting size is actually restricted depending on the size of the gadget.

Fewer suited to restricted manufacturer runs or by single casting, which becomes insensibly pricier the lesser of them there are.

Low Pressure Die Casting Machine Requires Huge Investments

Low-Pressure Die Casting Requires A Huge Investment

How Does Low-Pressure Die Casting Compare To High Pressure Die Casting?

Low pressure die casting is actually a technique that precisely utilizes pressure other than gravity to permeate molds with smelted metals.

While the high pressure die casting is a technique whereby liquefied metal is compelled under pressure into a covered mold hole.

Low-pressure die casting usually utilizes alloys that have an un-elevated melting point and enables the fabrication of parts around 150kg.

The benefits include very raised power and the competency to precisely make complicated geometries while optimizing matter utilization.

The technique is a little suitable for very slender-walled components where needed density is less than 3mm and is actually very sluggish.

While on the high pressure die casting which is usually implemented in soft alloys like zinc and aluminum.

The liquefied metal alloy is constrained into the mold with elevated pressure and increased velocity, which enables faster casting fabrication.

How Low Pressure Die Casting Compares To High Pressure Die Casting

Figure 3- How Low-Pressure Die Casting Compares To Low-Pressure Die Casting

High pressure die casting will actually give a  softer exterior for options thus allowing other coatings to be enforced directly.

In high pressure die casting it actually runs with both of the two chambers, hot chamber and cool chamber die casting.

In high pressure die casting it actually has high velocity especially when processing as it has reduced or short casting cycles.

Low pressure die casting can actually be fabricated casting with more difficult holes while high-pressure die casting is manufactured with simple holes.

Low-pressure die casting actually fabricates tiny and moderate-sized casting and big ones while high pressure die casting.

Low pressure dies casting a stream of liquefied metal is soft while in high pressure die casting it is actually not stable.

The flow velocity of the melted metal in the low-pressure die casting is actually slow 150mm/s in the casting form.

The flow velocity of melted metal is quick and will end up to 60mls and 120m/s in high pressure die casting.

Usually, LPDC fabricates little and moderate casting as well as bigger castings while HPDC fabricates and moderate size of castings.

Usually, LPDC components can precisely be treated by torridity and the hardness is increased greatly compared to HPDC, not heat treated.

What Are The Components Of Low-Pressure Die Casting Equipment?

Sealed furnace- it holds the tank that contains liquefied metal in it.

Riser tube- this is the pathway where the melted metals feed up into the die cavity.

Die cavity- Where the solidification of the liquefied metal actually takes place and forms in the die cavity.

What Does Low-Pressure Die Casting Process Involve?

Low-pressure air is inserted into a covered furnace that’s in possession of a tank that’s filled up with an already melted metal.

The melted metal engulfs up with a low speed throughout the riser tube and then goes into the cavity containing die.

Immediately casting densities’ in die cavity pressurized air is freed to enable remains of smelted metal in the riser back into the tank.

How Does Low-Pressure Die Casting Vs Gravity Die Casting Compare?

Gravity Die Casting Machine

Gravity Die Casting Machine

The gravity die casting is more appropriate for the production of aluminum casting in little quantity and the miniature advancement cycle.

While the low pressure die casting is actually proper for the fabrication of aluminum castings when it comes to bigger quantities.

Precisely aluminum low pressure die casting technique is the fabrication of car wheel ring, design is characteristic of low pressure die casting.

While aluminum gravity dies casting technique is the fabrication of industrial robot castings in little quantity but with elevated quality requirements.

Gravity die casting has a labor principle that utilizes gravity and makes diverse components in a short period of time with low cost.

Low-pressure die casting utilizes air pressure and makes single components for an extended period of time for a higher cost.

What Are The Main Low Pressure Die Casting Applications?

The main low pressure die casting applications include components of things like wheels and cylinder heads manifolds and block and housings.

There is also critical aircraft castings and electrical generator enclosure or housing and indoor kitchenware like the steam pods.

Are There Alternatives To Low-Pressure Die Casting Processes?

There are diverse preferences one of the preferences is sand casting which records for the enormous majority of metal casting overall.

By making an amalgamation of clay, sand, and water around complicated patterns, molds are designed filled with liquefied metal and demolished once solidification occurs.

The elevated torridity or the high heat characteristics of the sand actually makes this magnificent sand casting technique of molding.

Investments casting is the other preference, this is privileged today by lots of businesses for its preciseness and its adjustability.

Gravity casting is a manageable technique of filling slender patterns with liquefied metal enabling gravity to flow into each recess of mold.

Gravity casting actually approaches a variety of benefits like soft exteriors, precise dimensional and quick fabrication period it’s preferred in the automotive business.

Which Parts Can You Produce Using Low-Pressure Die Casting?

Machine-driven factory utilizes low-pressure die casting in all things from cars, conveyance, engine parts, GPS, and amusement arrangement housings.

Parts Of A Motor Car Produced Through Low Pressure Die Casting Technique

Parts Of A Motor Car Produced By The Low Pressure Die Casting

General motor adapted low pressure die casting technique to favor their necessities and designed their different technique utilized in protection section.

The relaxation and landscaping industries actually designs things like RV chasses, out case gearbox, hydrostatic axles, marine undercuts to clothe their output.

Life-supporting healthcare machines such as blood investigation equipment and contractibility pumps in increase to surgical equipment, hospital device control.

How Does Low Pressure Die Casting Compare To Investment Casting?

Investment casting has another name precision casting, the technique begins from designing a wax shape like the pattern required of part.

Low pressure die casting is a technique of creation that utilizes pressure-other than gravity to permeate molds with smelted metals.

Complicated Design Or Intricate Design

Investment castings gives outstanding creation adjustability as one can cast complicated patterns into the part then accomplish accurate dimensions and slender-walls.

In low pressure die casting it also usually gives out an accurate measurement results but it cannot fabricate a complicated design.

Investment Casting technique

 Investment Casting Technique

Matter Selection

Investment casting technique enables for both components that contain iron and those that don’t thus giving broad scale of matter choosing.

When it comes to low pressure die casting utilizes for or accommodate for matter like the aluminum, zinc and magnesium.

Part Size

Investment casting is restricted to width of component as wax prototype must be carefully placed on sprue continuously inserted in ceramic bio-solids.

Low pressure die casting has little capacity restriction and designs bigger pats but with more cost in the detail and casting.


Investment casting is a raised hand-operated labor technique to yield quality range and smooth exterior finish thus being pricey casting technique.

Low pressure die casting is pricier because of use of machine for completing parts less pricey for bigger quantity.

Exterior Finish Or Complete

Exterior finish of investment casting is usually the better version and it can accomplish exact tolerance ITS-6 with the micro complete.

Low pressure die casting fabricates standard exterior complete but actually extended equipment are required to finish goods to last stage.

Which Metals Are Suitable For Pressure Die Casting?

Some of the most common alloys include:

Zinc Alloys

It’s actually one of the best when utilized for elevated production creations that actually have powerful protection against tension or distress.

Aluminum Alloys

It’s also utilized greatly in plans that need elevated temperatures and are actually one of the prolonged enduring matter on market.

Magnesium Alloys

This alloy actually has a characteristics of being very feathery weight but with actually a great power to the weight ratio.

What Are The Defects Of Low Pressure Die Casting?

Some of the causes of low pressure die casting process include:

Gas Permeability

Gas permeability occurs in the frame of the die casting components, oval or round, with soft exterior and clear white color.

The equipment exterior can be recognized by eye review after casting and the non-casting exterior requires to be discovered by x-ray.


The freed hydrogen from liquefied metal alloys elevated the melting torridity thus increasing the permeability of hydrogen in liquefied metal.

Temperature reduction and freezing of die casting permeability of hydrogen in liquefied metal to create gas porous.

Involve gases when filling the liquefied metal alloy

The liquefied metal alloy is poured into dies with elevated force and elevated velocity thus causing disturbance to streaming of liquid.

Gases From Mold Free Agents

Molds free agents decay and fabrication gases when it is heat conducted by the liquefied metal alloy thus producing excessive gas.

Pull (Drags) And Fusing (Soldering)

Drags are co-ordinate with the dies opening dictation with a certain measure and come out as strip-pattern on exterior components.

Soldering is brought about by individual sticking of alloy metal and cavity and looks as parts of die casting exterior.

 Soldering Defect

Soldering Defect


The harm on the exterior of the die holes and inadequate toughness of die hole or low coarseness of the hole exteriors.


These occurs on exteriors of die casting components as non-identical of protuberance which are brought proportions by gas inflating beneath exteriors.


Cleave occurs on the exterior of die casting as straight or unsymmetrical patterns which have trend of increase with outside force.

Cleave include the cold cleave and the warm cleave or crack the matter is decomposed on the cleave or crack.

 A Crack defect On A Die Cast

A Crack defect On A Die Cast


The congruous aspect of the die casting components does not connect to the illustration and the completely contort or local appear.


The poor casting of architecture creation leads  to the non-uniformity reduction untimely mold opening bring about not enough hardness of casting.

Turtle Cracks

They are web-like, fur-like bulge or depression on the exterior of the die casting and then they increase and lengthen incessant.


In heavy- walled places, there are dimples on the exterior of the die casting components, this deformity is seen by the eye examination.

Short Filling

Some matter is actually not there in an incomplete place of the casting exterior part is seen by the eye examination.


On the border of the parting exterior of the die casting components which are slender and not in uniform metal sheets.

How Can You Improve Efficiency Of Low Pressure Die Casting?

Having an authority progressive discharge of pressure would improve the release of pressure quickly preventing defects caused by the sudden pressure release.

Controlling torridity of melting just in case there is high temperature and withdraw gas from liquefied metal alloy to prevent more volatilization.

Covet correct metal alloy and enhance quality and quantity to improve defect of having short filling in part of casting exterior.

By washing up parting exteriors and holes of die and ensure frequent maintenance of dies and casting machine is done preventing flashes.

Adapting the die casting rectification specification and secure adequate securing force is actually another way of improving efficiency of the LPDC.

Purification of smelted metal accurately and exhaustively to discard of any impurities and ensure graphite is churned uniformity this prevents inclusions.

To ensure the efficiency of LPDC on running to prevent interlayer defect one has to clean up die hole and slider.

Enhance the casting architectural plan to precisely prevent the non-uniformity of the wall consistency and avoid uneven torridity of die hole.

Elevate the injection pressure and also enhance the venting execution of the die hole and then extend also the pressure-holding period.

Prefer decent matter die casting mold and torrid treat procedure ensure filling torridity should not be elevated for elevated melting points alloys.

How Do You Choose Mold For Low Pressure Die Casting?

When choosing mold, you should consider the following:

Consider The Mold Parting Surface

This is important to consider in-order to be able to take out a component out of its mold carefully without affliction.

There could be need for part exterior replacement reliant on figure or sketches of route one can choose suitable for him/her.

Consider The Cavity Size Of The Mold

One could need cavity dimensions to be different depending on plan designed to be molded consider ones that fit your plan.

You should also look at deepness you want the cavity to be in order to fit exactly design you wanted.

Consider Mold Wall Thickness

Ensure that the wall mold thickness fits with your measurement or design you wanted and functions well without leaving any dentures.

Wall thickness is eventually reliant on matter you choose as it determines strength it has for one to accomplish powerful parts.

Slender walls will actually decrease the volume of the matter utilized and the cycle period, consequent a lighter economical components.

Slender walls results to being fragile and cracking when being removed out off from the mold and this sacrifice the architectural decency.

Ensure there is uniformity so as not to have one side bigger and the other slender so as to dodge molding concern.

What Is The Minimum Wall Thickness In Low Pressure Die Casting?

Wall heaviness usually is 2mm for the aluminum die casting but it depends on dimensions one wants and thickness of design.

What Is The Casting Temperature In Low Pressure Die Casting?

Metal is moved from an impenetrable furnace through ascending tube into a metallic tool where the casting torridity is about 750C (degrees).

Which surface Finishing Can You Use On Low Pressure Die Casting Parts?

Some of the most common surface finishes include:

Vibratory Debarring

This technique utilizes vibration to take off deformity and sharp margins from exterior of your component to prep it for coating.

A Vibratory Debarring Machine Gives You The Preferred Surface Finish

A Vibratory Debarring Machine Gives You The Preferred Surface Finish

Its an alternative finishing technique that designs soft margins and also discarding oils on components that is from the apparatus process.

Short Blasting

This is a technique comprehending of blaring particles at an elevated velocity across the exterior to remove the excrescence from it.

Robot Sanding/Polishing

Machines does finishing or polishing in a very fast and competently sand brush and polish your component for shiny and softness.

Is Low Pressure Die Casting Suitable For Small And Large Parts?

Yes low pressure die casting is suitable for both large and small components as it deals with components size from large-medium-small.

How Can You Improve Quality Of Low Pressure Die Cast Parts?

By using good pure quality alloys when making or fabricating parts with the low pressure die casting technique for good quality.

Use of heat treatment to improve on the quality of parts especially for the complicated structural die casts areas of support.

How To Test Quality Of Low Pressure Die Cast Parts?

Taking time to review parts before dismissing them to customers or consumers and repair any that has damages to give quality goods.

Testing Parts produced by low pressure die casting technique is important to see if its working properly as required before releasing.

Is Low Pressure Die Casting Suitable For Thin Walled Parts?

No LPDC is actually not suitable for the slender wall components mostly because of the needed thickness is precisely beneath 3mm.

For all your low pressure die casting in China, contact us now.

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