Uns G43400 Steel Cold Drawing Process Key Steps - China

Key steps of cold drawing process of UNS G43400 steel 1 - Raw material preparation

Select SNCM439 steel billet that meets KS standard to ensure that the chemical composition (mainly C: 0.17-0.23%, Cr: 0.60-1.00%, Ni: 0.40-0.70%, Mo: 0.15-0.30%) meets the standard to avoid the cold drawing performance affected by the composition deviation.

Pre-treat the UNS G43400 steel billet: remove surface oil and rust, and perform spheroidizing annealing (reduce hardness and improve plasticity) when necessary to reduce mold wear and avoid steel breakage during cold drawing.

2 - Mold design and selection

Design the mold hole type according to the size of the final product (such as diameter and cross-sectional shape).

The mold material needs to be high-strength alloy tool steel (such as Cr12MoV) and heat treated to improve wear resistance and service life.

3 - Cold drawing process control

Pulling force calculation: Calculate the required pulling force according to the original size of the steel, the target size and the yield strength of the material to avoid excessive pulling force causing steel breakage or mold damage.

Pulling speed: Generally controlled at 5-15m/min.

Too fast speed can easily cause the steel to heat up and cause surface oxidation or mold overheating, while too slow speed will affect production efficiency.

4 - Finished product processing

UNS G43400 steel after cold drawing needs to be straightened to ensure that the straightness meets the requirements.

Remove the residual lubricant on the surface and perform surface anti-rust treatment (such as galvanizing and oiling) if necessary.

Perform dimensional inspection (such as diameter tolerance, ovality) and mechanical property tests (such as hardness and tensile strength) on the finished product to ensure that it meets the design standards.

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Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

• Phone: 076985475596

• Address: 1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town, Dongguan , Guangdong , China

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• Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.
  
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