C & S Metal Products Co., Ltd.

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Valve Parts (Lost wax casting OEM)

Valve Parts (Lost wax casting OEM)

High Quality Valves

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Special Alloy (Lost wax casting OEM)

Special Alloy (Lost wax casting OEM)

Manufacture various types of special alloy parts according to customer demands.

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C & S After-treatment Procedure Introduction

C & S Metal Products Co., Ltd. is Taiwan supplier and manufacturer in Investment Casting Industry. C & S has been offering our customers high quality precision casting, alloy investment casting, lost wax casting, investment casting, metal casting since 1980. With both advanced technology and 36 years experience, C & S always make sure to meet each customer's demand.

After-treatment Procedure

Sand Washing

  1. Castings are sent to sand washing room to do the first time of sand washing and remove the most remaining ceramic sand after shell removal process.
Sand Washing
First step of sand washing.

Cutting

  1. To use of the cutting machine to cut apart the required casting and die head.
Cutting
Cutting.

Grind

  1. Grinding the gate and making it flat after cutting castings depends on client’s request or demand.
Grind
Grind.

Weld Repair & Fix

  1. If castings have some slight defects or burrs, the welding repair and fixing will be proceeded in order to improve the quality.
Weld Repair
Weld Repair. Repair
Repair.

Heat Treatment

  1. According to customer’s demand and request, different heat treatment can be chosen such as solid solution, normalization, annealing, precipitation and hardening and tempering.
Heat Treatment
Heat Treatment.

Pickling

  1. Castings do final washing and ensure the corner of internal and external are no residual ceramic sand.
  2. Pickling is called passivation treatment can chemically remove free iron and the external of the metal grain of the surface to become a protective layer against rust especially for stainless steel.
Sand Washing
Sand Washing.

Straighten

  1. Different types of casting may be deformed by external or natural factors and then the use of hydraulic machines and customized mold and fixture to reform casting within the standard size.
Straighten / Punch
Straighten / Punch. Straighten and check the dimension
Straighten and check the dimension.

Video

Cutting



Grind



Straighten