Introduce
Cold forging is a metal processing technology in which pressure is applied to metal billets through molds at room temperature to make them plastically deformed for forming. Relying on the processing characteristics at room temperature, this process can refine metal grains and improve the performance of parts such as strength and hardness. At the same time, it has the advantages of high material utilization rate, high precision, good surface quality and high production efficiency, and is suitable for mass production. However, it also has limitations such as large equipment investment, short mold service life and high requirements for the plasticity of materials. Cold forging is widely applied in industries such as automobiles, electronics, aerospace and machinery manufacturing. With the development of technology, it is continuously moving towards precision to meet the needs of industrial production with higher precision.
High Dimensional Accuracy:During the cold forging process, the metal material undergoes plastic deformation under the restriction of the die, enabling precise control of the dimensions and shape of the part, and achieving high dimensional accuracy. Generally, it can reach IT8 - IT11 grade, reducing the allowance for subsequent processing. In some cases, parts can even directly meet the final dimensional requirements without the need for further cutting processing.
Good Surface Quality:The surface roughness of parts after cold forging is relatively low, usually reaching Ra0.8 - Ra3.2μm, and the surface is smooth and flat. This is because during the cold forging process, the metal surface becomes denser under the extrusion of the die, and the surface finish of the die is also replicated onto the surface of the part, improving the appearance quality and assembly performance of the part.
| Name |
cold forging parts |
| Tolerance |
±0.02mm |
| Certificate |
ISO9001 |
| Size |
Customized Size |
| Application |
Metal Processing Machinery Parts |
| video outgoing-inspection |
Provided |
| machinery test report |
Provided |
| Shape |
Customizable |
| Shipping |
DHL, UPS, FedEx |
| Material |
Customers' Requirement |
| Keyword |
Metal transmission spur gear |
| Packaging |
Wooden cases or according to customers' needs |
| Quality |
Top High |
| Hardness |
According to drawing requirements |
| Service |
Customized OEM |
| Quality Control |
ISO/TS16949:2002/ISO9001 |
| Surface treatment |
Customers' Demand |
| Machining |
CNC |
Applications
Automobile Manufacturing
1.Various components in automobile engines, such as crankshafts, connecting rods, piston pins, etc., are often manufactured by the cold forging process. These components require high-precision dimensions and good mechanical properties, and cold forging can meet these requirements while improving production efficiency and reducing costs.
2.Components like half shafts and ball joints in the automobile chassis also utilize the cold forging process. Cold forging enables these components to achieve high strength and good wear resistance, enhancing the overall performance and safety of the vehicle.
Aerospace
1.Key components of aircraft engines, such as blades and impellers, have extremely high requirements for the strength, toughness, and fatigue performance of materials. The cold forging process can precisely shape these components without reducing the material performance, improving their reliability and service life.
2.Structural components of aircraft landing gear, transmission parts, etc., also adopt the cold forging process for manufacturing. Cold forging can ensure the high strength of these components while reducing their weight, thus improving the fuel efficiency and performance of the aircraft.
Electronics and Electrical Appliances
1.Various precision components in electronic devices, such as SIM card trays of mobile phones and hinges of laptops, are usually produced by the cold forging process. Cold forging can achieve high-precision forming, meeting the strict requirements of electronic devices for the dimensional accuracy and appearance quality of components.
2.Conductive components in electrical switches, sockets, and other products are also often manufactured by the cold forging process. Cold forging can increase the density and conductivity of the conductive components, ensuring the performance and safety of electrical products.
Hardware Tools
1.The heads of various wrenches, pliers, and other hardware tools can obtain high hardness and strength through the cold forging process, improving the durability and performance of the tools.
2.The blanks of cutting tools such as drills and taps can also be formed by the cold forging process. Cold forging can improve the internal structure of the materials, enhancing the cutting performance and service life of the cutting tools.
Medical Devices
1.Some key components in medical devices, such as artificial joints and dental implants, have extremely high requirements for precision and biocompatibility. The cold forging process can accurately manufacture these components while ensuring their surface quality and mechanical properties, meeting the usage requirements of medical devices.
2.Some metal components in disposable medical devices such as syringes and infusion sets also adopt the cold forging process for production. Cold forging can improve production efficiency, reduce costs, and ensure the quality and safety of the products.
Building Hardware
1.Hardware accessories for building doors and windows, such as hinges and handles, can improve their precision and surface quality through the cold forging process, making the opening and closing of doors and windows smoother. At the same time, it can enhance the corrosion resistance and service life of the hardware accessories.
2.Various metal ornaments used in building decoration, such as handles and decorative strips, the cold forging process can make them present various exquisite shapes and surface effects, meeting the aesthetic requirements of building decoration.
Production process
Raw Material Preparation
Material Selection: According to the usage requirements and performance characteristics of cold forging parts, select appropriate metal materials, such as carbon steel, alloy steel, stainless steel, copper alloy, aluminum alloy, etc. The purity, hardness, and microstructure of the materials will directly affect the quality and forming difficulty of cold forging parts.
Inspection: Conduct strict inspections on the purchased raw materials, including chemical composition analysis, hardness testing, and metallographic structure inspection, etc., to ensure that the materials meet the production requirements.
Blanking: Cut the raw materials into suitable blanks according to the size and weight requirements of the cold forging parts. The blanking methods usually include sawing, shearing, laser cutting, etc., and the cutting accuracy should meet the requirements of subsequent processing.
Die Design and Manufacturing
Design: According to the shape, size, precision requirements, and production batch of the cold forging parts, design a reasonable cold forging die structure. Die design needs to consider factors such as the metal flow law, demoulding method, and die strength to ensure the smooth progress of the cold forging process and the stable quality of the cold forging parts.
Manufacturing: Use high-quality die steel materials and manufacture the die through processes such as machining, electrical discharge machining, and wire cutting. The die manufacturing precision requirements are high, and the surface roughness should be low to ensure the dimensional accuracy and surface quality of the cold forging parts. After manufacturing, the die needs to be heat-treated to improve its hardness, strength, and wear resistance.
Blank Processing
Surface Treatment: In order to improve the forming performance and surface quality of the blank during the cold forging process, it is necessary to carry out surface treatment on the blank. Common surface treatment methods include phosphating, saponification, etc. These treatments can form a lubricating film on the surface of the blank, reduce the friction between the blank and the die during the cold forging process, reduce the forming force, and prevent metal sticking to the die.
Preheating: For some high-strength and high-hardness metal materials, in order to reduce the difficulty of cold forging, it is sometimes necessary to properly preheat the blank. The preheating temperature is generally between 100 - 300°C, and the specific temperature is determined according to the material type and cold forging process requirements.
Cold Forging Forming
Pre-forming: For cold forging parts with complex shapes, multi-step forming is usually required. The pre-forming process is to initially process the blank into a semi-finished product close to the final shape. By gradually changing the shape and size of the blank, the deformation amount and forming force during the final forming are reduced, and the quality and forming precision of the cold forging parts are improved. Final Forming: On the basis of pre-forming, put the blank into the final forming die, and make the blank undergo plastic deformation in the die cavity by applying a certain pressure and stroke to finally form a cold forging part that meets the design requirements. During the cold forging forming process, it is necessary to strictly control process parameters such as the forming speed, pressure, and die temperature to ensure the stable quality of the cold forging parts.
Subsequent Treatment
Demoulding: After cold forging forming, the cold forging parts need to be smoothly demoulded from the die. The demoulding methods usually include mechanical ejection, pneumatic ejection, etc. Care should be taken to avoid damaging the cold forging parts during the demoulding process. Cleaning: Remove impurities such as oil stains, iron filings, and scale from the surface of the cold forging parts. Common cleaning methods include pickling, sandblasting, shot blasting, etc. The surface of the cleaned cold forging parts should be clean, tidy, and free from obvious defects.
Heat Treatment: According to the performance requirements of the cold forging parts, carry out appropriate heat treatment on the cold forging parts, such as quenching, tempering, carburizing, nitriding, etc. Heat treatment can improve the strength, hardness, toughness, wear resistance, and other properties of the cold forging parts to meet their usage requirements under different working conditions.
Machining: Some cold forging parts still need further machining after cold forging forming, such as drilling, tapping, grinding, milling, etc., to meet the final dimensional accuracy and surface quality requirements of the cold forging parts.
Surface Treatment: In order to improve the corrosion resistance, wear resistance, and decorative properties of the cold forging parts, surface treatment can be carried out on the cold forging parts, such as electroplating, spraying, electroless plating, etc.
Company Profile
Shandong Meide Import and Export Co., LTD was established in 1997. Located in Liaocheng City, Shandong Province, the largest steel logistics center in North China.We are a Chinese company with over 25 years of forging experience.Our focus is on using high-efficiency electro-hydraulic hammer facilities to produce free forged and open-die forged products.We are proud of our independent quality assurance laboratory, which ensures that all of our products meet our customers' requirements. We have passed ISO9001:2000 quality system certification, SGS, ROSH, TUV and REACH certification. Has cold rolling, hot rolling and other production lines. Such as heat treatment chemical analysis, metal halide testing, physical testing, nondestructive testing and other testing equipment and testing technology, imported physical and chemical testing equipment full spectrum direct reading spectrometer, can quickly and accurately chemical analysis of all kinds of metal materials. According to American ASTM standard, Japanese JIS standard, German DIN standard, British BS standard and other standards production. At the same time, we can customize and develop new products according to the actual application of customers, and provide products for different cost and performance requirements. The company cooperates with more than 20 well-known steel mills in China, and has established modern large outdoor warehouse and indoor warehouse, with 20,000 tons of goods in stock. The customer base covers all provinces and cities in China, and has more than 100 long-term stable cooperative customers. We warmly welcome and look forward tocooperating with you!
Certifications
Packaging & Shipping
Transportation.
We ship goods from Qingdao, Tianjin ports. You can designate other ports as required.
Our delivery time is within 7-15 days. If the quantity is very large or special circumstances occur, it may be longer.
Packaging.
Waterproof paper steel ring standard airworthiness export packaging; Packing seaworthy wooden case packing.
Make sure all the goods are delivered to you. If you have any requirements, you can also contact us.
FAQ
1.Are you trading company or manufacturer?
We are factory.
2.What is your payment term?
We can accept T/T,LC for generanutsl order ,Paypal and Western union for small order or samples order.
3. How to enjoy the OEM services?
Usually, base on your design drawings or original samples, we give some technical proposals and a quotation to you, after your agreement, we produce for you.
4.What do I need for offering a quote?
Yes, we can provide you sample, but you need to pay for the sample and freight firstly.We will return the sample fee after you make an order.
5. Can you provide Certificates for aluminum materials?
Yes,we can supply MTC-Material Test Certificate.
6.Can you cut the materials into small sizes ?
Yes,we can do it to meet you need.
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