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Quality Control at Henan Metals & Minerals

Number of visits: Date:2012-5-24

Product Design:

-We offer the engineer consultation to your design for production improvement and cost saving

-Collaborating with the customer’s engineer to identify the various trade-offs that could affect overall costs.


Mold Making: achieveing the mold as per drawing requirment for smooth production;


Casting Qualification: First Piece Inspection at the start of each production;


Process control: Checking process control systems data for statistical analysis for dimension, tolerances,porosity,etc;



1.How do you guarantee quality ?

At its own production facilities in Henan Metals & Minerals guarantees standards for quality, production planning, employee management and occupational safety and thereby maintains deadlines and high-quality products. Our foundry engineers who specialize in individual procedures can make suggestions to optimize production-related design during the offer preparation phase. Since they are always on location, our quality assurance engineers can quickly troubleshoot quality problems in the production of our contractual partners and suppliers who have met our qualifications. our years out experience and networking with local suppliers protect you from typical surprises that maybe arise when purchasing parts other China vendor. The manufacturing procedures of Henan Metals & Minerals are based on ISO standards and ensure that our customers receive the specified quality.

2.How can I assure myself of your quality before making an order?

We encourage you to determine our quality beforehand. We would be glad to send you an example similar to your request for your review. Feel free to contact us!

3.What casting alloys do you use, and what standards are used?

We use the requested alloys for production, mostly ADC12 & A380. If these are not available or difficult to come by in China, we offer alloys based on other international industrial standards that approximate the requested alloys. We would be glad to manufacture and test components made of special materials. This will be invoiced based on cost.

Dies and Molds

4.What is the service life of the dies/molds?

The service life of a die or mold always depends on the manner in which the die or molds is used and the wall thickness of the part produced. Henan Metals & Minerals specializes in metal casting for almost 20 years and can offer very attractive mold and die prices. The service life for a die casting die is 50,000 to 80,000 shots for aluminum.

5.What information need to be taken into account when submitting a inquiry for die casting dies?

Depending on if the mold or die is designed for one shaped part (1x1 cavity) or two equivalent shaped parts (1x2 cavities) or two different shaped parts in one mold or die (1+1 cavities), the possible part yield can be higher (1x2 cavities), or the mold or die costs for different parts can be reduced by combining the parts in a single mold or die (1+1 cavities). The possible combinations are dictated by the size of the part, the required tolerances of the part, and the maximum possible die or mold size. If the tolerances are tight, individual dies or molds are generally recommended. The tooling costs can be substantially reduced by planning the die or mold.

Here are a few examples to illustrate:
1x1 cavity – one molded part in a single die
1x2 to 1xN cavities – one molded part several times in a single die
1+1 cavities – two different molded parts in a single die
1+1+1 cavities – three different molded parts in a single die
1x2+1x1 cavities – two equivalent parts plus another molded part in a single die
4x2 cavities – for different molded parts with two cavities each in a single die
2x4 cavities – two different molded parts with four cavities each and a single die

6.Can I make subsequent changes to the molds?

Normally, changes can always be made at a later time. It is however better to plan changes beforehand so that the tools can't be suitably adapted. Subsequent changes can reduce the life of a mold.

7.How quickly can the molds be changed?

Henan Metals & Minerals can change the molds and dies very quickly and flexibly. The delivery time for subsequent samples after the customer has changed the design is at least 5 days ex-factory.

8.Can you manufacture molded parts for us using an existing mold or die?

No. Due to the different standards between Europe, the United States and China, this is not possible. In addition, in our experience it is not recommendable to transfer molds or dies to China for reasons of cost (transportation insurance, warranty problems, etc.). We would be glad to prepare you an offer for the manufacture of a die or mold and molded parts.

9.Can I obtain the molds from you and any time?

While we are producing the molded parts, the dies or molds are at our production facilities or those of our contractual partners. Once the molds have been completely paid for, they are then owned by the customer. You can then pick up the molds at any time. The molds are manufactured for use in China, correspond to Chinese standards and therefore cannot be used without some alteration.

TypeInfo: Company News

Keywords for the information:Quality Control  Casting  Foundry  die  mold 


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