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News
The definition of the low carbon steel
Low carbon steel is a carbon steel with carbon content less than 0.25%. It is also called mild steel because of its low strength and low hardness. It includes most ordinary carbon structural steels and some high-quality carbon structural steels. Most of them are used for engineering structural parts......
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Matters need attention for steel casting
Casting, also called pouring, is the most important process during steel castings manufacturing. If this process is not properly managed, the scrap rate of the steel castings will be very high. Thus, during steel casting production process, our investment casting factory builds strict requirements a......
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How to solve shell expansion of stainless steel investment castings?
When making stainless steel investment castings,we often meet shell expansion defect.Shell expansion defect is caused by volume solidification mode of modular cast iron ally and graphitization expansion in the process of eutectic transformation.Below Tongda will talk about how we solve this problem.
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PO Procedure for investment castings
A PO Procedure starts from inquiry to PO closed.To make this process standard,we have a strick procedure to follow.Tongda mainly exporting investment castings to overseas customers,such PO procedure will help us to have a better communication with our customers.
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How to do Lettering on investment castings?
Lettering are widely required on investment castings made in Ningbo Zhiye in China. Such lettering can help to identify the investment castings, trace the quality of the investment castings. There're lots of lettering types on investment castings in China. Then, how to do the lettering on invest......
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Powder coating for investment castings
Definition Powder coating is a common way for investment castings.So what is powder coating? It is a surface treatment way that spray plastic powder on the investment castings. We could also call it electrostatic powder spraying coating. Spraying color should be consistent with the selected sampl......
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