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Cold Forging

Cold forging definition: Cold forging provided by WALKSON cold forging factories is a kind of forming processing for materials below recrystallization temperature, it is forged below recovery temperature. Forging without heating blank is called cold forging. 


Most of the cold forging materials are aluminum and some alloys, copper and some alloys, low carbon steel, medium carbon steel and low alloy structural steel with low deformation resistance and good plasticity at room temperature. As one of the reputable cold forging suppliers in China, we provide cold forging with good surface quality and high dimensional accuracy, which can replace some cutting processing. 


Cold forging by WALKSON, a professional cold and hot die forging manufacturer, can strengthen the metal and improve the strength of parts. For more information, please refer to our cold forging process flow chart or diagram. Related process videos, pdf or ppt files are also available. 


Advantages Of Cold Forging

Cold forging is an environmentally friendly manufacturing process in which the workpiece can be formed at high pressure and low temperature.  This cold forging process is able to ensure there are no bubbles, pores or any other impurities in the material, resulting in a very high quality cold forging product.

Compared with other manufacturing methods, the main advantages of cold forging are small dimensional tolerances, good surface finish, and low cost materials that can be worked to obtain the required strength and hardened without heat treatment.



Application Of Cold Forging

Cold forging is one of the most widely used chip free molding processes and usually does not require machining beyond drilling. The generally accepted cold forging definition is bulk material formed or forged at room temperature without heating the initial slug or intermediate stage.

Cold forging is growing a high popularity in the automotive industry for the manufacture of steering and suspension components, anti-lock braking systems, axles, drill bits, clutch hubs, gears, pinions, pins, steps, and intermediate shafts and sleeves.



Cold Forging Vs Hot Forging

Cold forging process is a molding process carried out at room temperature,which is cold forging temperature. The advantage of cold forging is that we get a good surface finish for the cold forging product.

While during the hot forging process, heat is applied to soften the sheet metal.

The main difference between hot forging and cold forging is that the high temperature of hot forging gives the metal a finer and more complex shape than cold forging.


Cold Forging Process

Cold_Forging_Process.jpg


Cold Forging Materials

Cold forging is the process of plastically deforming a metal material at room temperature while applying massive pressure.

Other key advantages of the cold forming process, in addition to improved overall material properties, include higher dimensional accuracy than forged parts, excellent surface quality, and no need to apply additional energy into the process, such as extreme temperatures.

Cold forging materials that can be cold formed at Walkson include, but are not limited to:

Carbon steels, Alloy steels, Stainless steel, Copper, Aluminum, Bronze, Nickel alloys.



Advantages and Difficulties of Cold Forging Materials


AdvantagesDifficulties
Near-net-shape formingExtensive treatment of the work piece
Superior dimensional accuracy when compared to forged partsForming degree is lower than with hot forming.
Material utilization is extremely highComplex forms difficult to realize
No scalingHigher tool expenditure
High surface quality
Work piece strength is increased through strain hardening.
Expedient grain flow as with hot forming
No heating necessary


Characteristics of Types of Cold Forging Materials 1



Sr.GradeC %Si %Mn %S % MaxP % MaxCr %B 7%Mo %Pb %Ni %Other
1.1AISI 10060.06 Max0.10 Max0.25-0.400.050.04





1.2AISI 10080.10 Max0.10 Max0.30-0.500.050.04





1.3AISI 10100.08-0.130.10 Max0.30-0.600.050.04





1.4AISI 10150.13-0.180.15 Max0.30-0.600.050.04





1.5AISI 10180.15-0.200.05-0.100.60-0.900.050.04





1.6EN 1AL0.08-0.150.10 Max0.85-1.150.26-0.350.04-0.09


0.25-0.35

1.7EN 1A0.07-0.150.10 Max0.80-1.200.20-0.300.060 Max







Characteristics of Types of Cold Forging Materials 2


Sr.GradeC %Si %Mn %S % MaxP % MaxCr %B 7%Mo %Pb %Ni %Other
3.1SCM 415H0.12-0.180.15 -0.350.55 -0.900.030.030.85-1.25
0.15 -0.35
0.25 Max
3.2SCM 4350.32-0.390.15 -0.300.55 -0.900.030.030.80-1.25
0.15 -0.35
1.30-1.80
3.3AISI 41350.33-0.380.15 -0.300.70 -0.900.040.0350.80-1.10
0.15 -0.35
0.25 Max
3.4EN 240.35-0.450.10 -0.350.45 -0.700.040.0350.90-1.40
0.15 -0.35
1.30-1.80
3.5AISI 41400.38-0.430.15 -0.300.75 -1.000.040.0350.80-1.10
0.15 -0.25


3.6AISI 4140M0.38-0.430.15 -0.300.75 -0.900.0050.0150.80-1.10
0.15 -0.25


3.7AISI 51400.38-0.430.15 -0.300.70 -0.900.040.0350.70 -0.90




3.8AISI 15410.36-0.440.15 -0.301.35-1.650.050.04







Characteristics of Types of Cold Forging Materials 3



Sr.GradeC %Si %Mn %S % MaxP % MaxCr %B %Mo %Pb %Ni %Other
2.1AISI 10821 M0.18-0.230.30 Max0.80-1.100.030.030.10-0.200.0005-0.003



2.2AISI 15B250.23-0.280.30 Max0.90-1.300.030.030.10-0.200.0005-0.003



2.3DIN 19MnB4M0.20-0.250.15 -0.300.80-1.100.030.030.30-0.400.0006-0.003



2.4AISI 15B410.38-0.440.15 -0.301.35-1.650.030.030.10-0.200.0006-0.003



2.5AISII 10936M0.34-0.390.15 -0.300.80-1.100.030.030.20-0.400.0006-0.003



2.6DIN 36CrB40.34-0.380.10 Max0.60-0.900.0150.0150.90-1.200.0015-0.005



2.7AISI 51B35M0.34-0.400.15 -0.300.35-0.500.0250.0250.80-1.150.0006-0.0030.10 Max
0.15 Max


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