Service
Service

Aluminium die casting

Reigstone   aluminium die casting service include tooling design, die casting, secondary processing including CNC machining, alloy select, surface finish.


 With the purpose of delivering the top quality to our customer,our professional team dedicated to supply the best solution to cover all detailed questions. No matter is a technic design, or special packaging method requirement.

Tooling design

All great products are created by design, but also most of the defectives are unwittingly designed into the product itself. A quality design should be given priority for a casting manufacturing. When we are designing the tooling, we should completely consider the main features from these important factors like porocity eliminating, thermal balancing, cost-effective, die life, etc.

1. draft angle
2. Parting line
3. Ejecting pins
4. Cast- inserts
5. Core slide
6. Bosses
7. Ribs
8. Uniform walls
9. Fillets
10. Holes&windows

So Reigstone can design and manufacture the tooling of client desired, whatever it is a single cavity die, multiple-cavity die, or family die. We have the ability to build the perfect and practice mould according to the configuration of the parts and other requirments customer may have.


Tooling styles examples:

Single cavity die

Multiple-cavity die

Family die


Software and file forms for design.

Usually we use Solidworks, UG, Pro/Engineer, AutoCAD for the designing, so most of models of the file we can open, of course the CAD, PDF, JPEG, step, igs forms will be prefered.


Filling simulation:


3D model of tooling

Die casting

Casting capability


Our plant has very complete series of die casting machines, from 200 tons to 1250 tons. Casting weight could be from 10 grams to 12kgs.


All operation activities are full automatically, from pouring to injection, closing &opening the tooling, spraying tooling, fetching the casting, with high quality conveyor. To make the whole process is easy and smooth, to get very higher efficient and stable quality on the production.


In addition, matched with electronic furnace and extraction pipe to suck the waste gas away. The working environment is very friendly.


Casting capacity

Item Machine style Brand Picture Quantity Max casting dimension Max casting weight Casting grade Production capacity
DDC 200T Cold  chamber die casting machine L.K. Machinery
1 200X200mm 1.2kg CT4-CT5 (ISO-8062) 50000pc/month
DDC 280T Cold  chamber die casting machine L.K. Machinery
2 350X350mm 2kg CT4-CT5 (ISO-8062) 100000pc/month
DDC 400T Cold  chamber die casting machine L.K. Machinery
1 480X480mm 3kg CT4-CT5 (ISO-8062) 40000pc/month
DDC 630T Cold  chamber die casting machine L.K. Machinery
1 350X350cm 5kg CT4-CT5 (ISO-8062) 40000pc/month
DDC 800T Cold  chamber die casting machine L.K. Machinery
1 550x550mm 10kg CT4-CT5 (ISO-8062) 30000pc/month
DDC 1250T Cold  chamber die casting machine L.K. Machinery
1 750X750mm 12kg CT4-CT5 (ISO-8062) 20000pc/month


Features of our casting parts

No or very few small porocities.

It can help you to think various processes for developing project, when you don’t need to consider leaking. Lighten your load and save your extra cost.

Smooth surface

Smooth and flat surface makes appearance looks beautiful, and good texture.

Class 2-3 for die casting surface we can guarantee, following NADCA standard.

Quite compact

Enough compact can make the part stronger on the aspect of mechanical properties.

Instead of your other idea maybe with steel or other heavy metals, save cost on material and transporting.

Precise tolerance

Our as-cast usually can achieve CT5-CT4 grade, obviously it can reduce some machining processes and cost with such accurate casting dimension tolerance.

ISO/CD 8062-2 © ISO

Dimensions for which general tolerances are not suitable shall be allocated individual tolerances. See ISO 129-X (ISO 406)2) .

Geometrical tolerance grades

There are 7 casting geometrical tolerance grades (CTG) designated CTG 2 to 8 (see tables 2 to 5).

NOTE 1 Values are not given for grade CTG 1. This grade is reserved for finer values which may be required in the future.

The nominal length to be used in tables 2 to 5 shall be the largest dimension of the considered feature.  The datums to be used in tables 4 and 5 shall be the longer of the two features. If the features are of equal nominal length, either may be taken as the datum (examples, see Annex D).

When geometrical casting tolerances indicated by a general geometrical tolerance grade are not suitable, individual geometrical casting tolerances shall be allocated.

NOTE 2 The application of general tolerances according to this standard, see clause 10, implies the concept given in Annex E.


Alloy select


Alloy Data

A380 (ANSI/AA A380.0)   According to the data of NADCA, is by far the most widely cast of the aluminium die casting alloys, offering the best combination of material properties and ease of production. It may be specified for most product applications. Some of the uses of this alloy include electronic and communications equipment, automotive components, engine brackets, transmission and gear cases, appliances, lawn mower housings, furniture components, hand and power tools.


ADC-12(ANSI/AA 383.0)   is alternative to A380 for intricate components requiring improved die filling characteristics. Alloy ADC-12 offers improved resistance to hot cracking (strength at elevated temperatures)


Of course, it’s available to supply other alloy or customized the alloy depend on requirements.

Surface finish

In order to meet the demands of parts used in specified circumstance from different industries’ clients. We supply various surface finish methods, we also called it value-added service.

Shot blasting Sand blasting Powder coating Painting
Anoziding Electrophresis Polishing  Plating

Normally our as-cast Finish can achieve to the class 2 of Standard NADCA, to get to the class-3, by adjusting the production process and enhance the management, it is also okay for us. Below is a grade table from NADCA. 

As-Cast Surface Finish Classifications and Final Finish or End Use
Class As-Cast Finish Final Finish or End Use
1.Utility Grade No cosmetic requirements. Surface imperfections (cold shut, rubs, surface porosity, lubricant build-up, etc.) are acceptable Used as-cast or with protective coatings; Anodize (non-decorative) Chromate (yellow, clear)
2.Functional Grade Surface imperfections (cold shut, rubs, surface porosity, etc.), that can be removed by spot polishing or can be covered by heavy paint, are acceptable. Decorative Coatings: Lacquers Enamels Plating (Al) Chemical Finish Polished Finish
3.Commercial Grade Slight surface imperfections that  can be removed by agreed upon means are acceptable. Structural Parts (high stress areas) Plating (Zn) Electrostatic Painting Transparent Paints
4.Consumer Grade No objectionable  surface  imperfec- tions. Where surface waviness (flatness), noted by light reflection, is a reason for rejection special agreement should be reached with the die caster. Special Decorative Parts
5.Superior Grade Surface finish, applicable to  limited areas of the casting and dependent on alloy selected, to have a maximum value in micro inches as specified on print. O-Ring Seats or Gasket Areas
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Die Casting Manufacturer, Aluminum Die Casting Company, Precision CNC Machining China - Reigstone
Yanshanhe North Road, Beilun, Ningbo, China
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