China Cold Forging Factory
Simis Cold Forging Factory
SIMIS Cold Forging Factory Introduction
SIMIS Cold Forging Factory specializing in high-precision metal cold forming and precision cold forgings. The plant integrates die design and manufacturing, wire pre-treatment, cold extrusion forming, heat treatment, precision machining, and inspection, with the capability to produce carbon steel, alloy steel, stainless steel, aluminum alloy, and copper alloy cold forgings.
SIMIS focuses on delivering high-accuracy, high-strength, and mass-production cold forging solutions for industries including automotive, motorcycle, fasteners, hydraulics, electronics, motors, hardware tools, and aerospace.
Main Forming Equipment: Multi-station cold heading machines (3–6 stations), cold extrusion presses (300–1200 tons)
Auxiliary Equipment: Spheroidizing annealing furnaces, straightening machines, peeling machines, automatic feeders
Die Manufacturing: CNC lathes, machining centers, wire cutting, grinding, polishing machines
Heat Treatment Equipment: Vacuum heat treatment furnace, continuous mesh belt furnace (±5°C precision)
Forging Weight Range: 5 g – 5 kg
Max. Dimensions: Diameter ≤ 100 mm, Length ≤ 200 mm (depending on geometry)
High dimensional accuracy (up to IT8 tolerance grade)
Excellent surface finish, often requiring little or no machining
Custom Cold Forging Parts
Cold Forging Process
Cold forging process overview
Cold forging is to apply pressure to metal at room temperature to make it plastically deform and achieve the desired shape. Cold forging does not require heating of the metal blank, which can make the forgings have higher dimensional accuracy and surface quality. Cold forging is used in the manufacture of precision parts such as automotive parts, electronic accessories, and machinery.
1. Cold forging material selection
It is necessary to select metal materials with good plasticity and formability, such as medium carbon steel, alloy steel, stainless steel, aluminum alloy, copper alloy, etc., with good ductility and low yield strength to ensure that no cracks are generated during the cold forging process.
2. Billet preparation
The selected metal materials are made into suitable billets (such as small pieces, cylinders or bars), and impurities such as surface oxide layer and oil stains are removed.
3. Die design
Design a suitable high-strength steel die according to the shape, size and material properties of the forging.
4. Cold forging press forming
The billet is pressurized by cold forging machinery (such as hydraulic presses, mechanical presses, rolling presses, etc.), and the pressure usually reaches tens to hundreds of tons, causing the blank to undergo plastic deformation.
The billet is gradually pressed into the die under pressure to complete the forming of the part.
5. Forging cooling
After the part is formed, it needs to be naturally cooled to room temperature. The uniformity and stability of the forging can be guaranteed by controlling the cooling rate.
6. Heat treatment
Cold forgings need to undergo heat treatment processes such as annealing, normalizing, quenching and tempering to improve the mechanical properties of forgings such as strength and wear resistance.
7. Subsequent processing and surface treatment
Finishing: Cold forging can provide higher dimensional accuracy, but some parts still need to go through finishing processes such as turning, milling, drilling, etc. to ensure that the final parts meet the accuracy requirements.
Surface treatment: Sandblasting, polishing, painting or electroplating are performed to improve surface finish, corrosion resistance and wear resistance.
Materials Of Cold Forging
Simis Cold Forging Factory Forgeable Materials
Simis cold forging plants are capable of cold forging a variety of metal materials, including Carbon Steel, Stainless Steel, Aluminum Alloy, and Copper. Precision cold forging utilizes immense mechanical pressure to precisely control the metal's plastic deformation process at or near room temperature, resulting in near-net-shape parts with high dimensional accuracy, excellent surface finish, optimized material grain structure, and enhanced mechanical properties.
Cold forged parts exhibit higher strength and durability, and are commonly used in the manufacture of high-strength fasteners, automotive components, electrical parts, and precision machinery components.
Carbon Steel Cold Forging
Carbon steel cold forging is suitable for manufacturing bolts, screws, shaft components, and gear blanks. The cold forging process significantly improves the part's strength and surface hardness, offering excellent material utilization.
Carbon Steel Cold Forging Grades: AISI 1018, 1022, 10B21, 15B25.
Stainless Steel Cold Forging
Stainless steel cold forging is used for fasteners, connectors, and parts for the food or medical industries that require high corrosion resistance and high strength. Cold forging enhances the material's fatigue life and wear resistance.
Stainless Steel Cold Forging Grades: AISI 304, 316, 410, 430.
Aluminum Alloy Cold Forging
Aluminum alloy cold forging is suitable for parts requiring lightweighting and high strength, such as automotive suspension components, aerospace fasteners, and electronic heat sinks. The dense grain structure and fiber flow lines created by cold forging significantly improve the part's strength and fatigue performance.
Aluminum Alloy Cold Forging Grades: ASTM 6061, 7075 series alloys.
Copper and Copper Alloy Cold Forging
Copper cold forging is mainly used for manufacturing electrical connectors, terminals, and plugs that demand strict electrical and thermal conductivity. Cold forging achieves extremely high dimensional accuracy and a smooth surface, while also improving the material's conductive properties.
Copper and Copper Alloy Cold Forging Grades: C11000 (Electrolytic Tough Pitch Copper), C36000 (Brass).
