Inspection of raw material

Inspect the carried steel material, and perform the stock processing.

 

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(1) Pointing

(1) 口付

The length of the steel material of the one end about 200mm is thinned, through the dies, and made the grip fee to pull it out.

 

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(2) pickling

(2) 酸洗

The scale on the surface of the steel material is chemically peeled off with acid liquid.

 

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(3) Shot Blast descaling

The cast steel grain is hit on the surface of the steel material, and the scale of the steel material is peeled off mechanically.

 

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Alkaline Cleaning

Oils and fats that adhere to the steel material are washed off with the alkali liquid.

 

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Alkaline Cleaning

Film processing that gives steel material to biting prevention of dies and steel material when mold through dies.

 

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(4)Drawing

(4) 引抜

The steel material is built in a necessary size and shape through the dies in the cold room.

 

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Cutting

切断

The product is cut in a necessary length.

 

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(5)Heat Treatment

(5) 熱処理

Softening processing of steel material to facilitate processing, Heat-treatment with characteristic of steel.

 

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Chamfering

面取り

The cutting plane of the product is sharpened and smoothed off by the whetstone or the byte.

 

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(6)Straightenig

(6) 矯正

Bending of the product is suppressed through the roll, and it corrects it straight.

  

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Seal

It prints it on the side or the edge side of the product for identification.

 

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(7)Polishing

(7) 研磨

 

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Centerless Grinding

センタレス

A round steel material is sharpened with the grinding whetstone, and the size accuracy and the surface function are improved.

 

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(8)Inspection of Products

The quality characteristic of the product is collated with the product standard, and pass or fail is judged.

 

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Scaring

計量

The mass of the product is measured.

 

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Packing

梱包

To prevent the dirt and damage of the product, it wraps it.

 

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(9)Shipment

(9)出荷

It loads it into the track to send the product to the customer.

 

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