Emphasis on quality control:
1.The make of technology research recording card:
We can assure there will be no any holes, blister, crack, shrinkage cavity and so on based on technology. We will do some records about the easy-making mistake during the products development and note the correct operation methods.
2.Wax Mould sampling and Dimension inspection:
This process is to avoid changing of wax pattern contractibility rate results from the temperature change in the wax-pattern workshop, and finally result in products dimension disqualification. The rectification measure includes: Adjusts the temperature at the wax injection workshop and the water temperature used in Wax pattern cooling; testing tools; Callipers; Microcalliper；inner diameter gauge and Hight gauge.
3.Molten steel temperature control:
Investment casting differs from sand casting, Casting temperature need to be controlled perfectly, low temperature will result in incomplete products casting and have lack of body on the products；Excessive High-temperature will results in crack on the products. We install temperature inductor by the furnace and ask workers do temperature recording when casting, for the aim of better control the temperature.
4.Molten steel chemical composition control:
our company owns advanced Spectrograph imported from Germanyto assure that the products chemical composition conformed with specified standards. We will also test the molten steel composition before products casting, simultaneously, molten steel after casting will be sampled for Spectrograph testing, guide sample after casting will be kept for 2 years and also can keep as per customer’s requirement.
5. Products heat treatment control:
Correct heat treatment process is the only way to assure the products mechanical properties. We will design the heat treatment technology as per the products chemical composition and mechanical properties standards and provide the heat treatment process reports and temperature recording reports according to customer’s requirements. Also we can provide customer products testing bar in the same heat treatment furnace for customer inspection.
6.Products surface quality and dimensional inspection:
We have passed ISO:9000 certificate, and own special quality inspection department. With different products, quality inspection department will design different fixture and gauge. We will do 100% inspection upon the products for quarantee unqualified products scrapped in our company.
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