Ningbo Hewcho Industrial Limited.

Hot Forging VS Cold Forging Hot Forging VS Cold Forging

Forging is the use of an impact or pressure to deform the metal in the iron or forging die to obtain the desired shape and size of forgings. This type of process is called forging. Forging is one of the important forming methods for metal parts. It can ensure that metal parts have good mechanical properties to meet the requirements of use. It can be called hot or cold forging by whether the metal temperature is above or below the recrystallization temperature.

Hot Forging Process

Hot forging process is a metalworking process in which metals are plastically deformed above their recrystallization temperature, which allows the material to retain its deformed shape as it cools. It is performed at the highest temperature which does not destroy the metallurgical features of the considered alloy (up to 1250°C for steel, 300 to 460°C  for Al-Alloys, 750 to 1040°C for titanium alloys and 700 to 800 °C for Cu-Alloys).

Hot Forging Advantages(VS cold forging)

●Elimination of chemical impurities.
●Enhanced ductility.
●Homogenized grain structure.
●Accurate forming.
●Complex shapes.
●Resistance to cracking.
●Parts of higher weight and volume.

Hot Forging VS Cold Forging Hot Forging VS Cold Forging

Materials And Products

Moreover, virtually all metals have alloys that are forgeable, the most common forging alloys include carbon steel, stainless steel, aluminum, copper, brass, bronze, iron.
Hot forging is a process that can be used to produce a wide variety of parts used in a lot of sectors such as aerospace (aircraft engines, airframe, and auxiliary equipment…), automotive (joints, chassis parts, crankshafts...), electricity (power generation, transmission…) machinery and equipment, hand and industrial tools, construction, mining, plumbing (pipeline fittings, valves, flanges…), shipbuilding, railroad equipment...

Cold Forging Process

Cold forging is a metal forming process where a slug or blank is deformed at room temperature. Cold forged parts can be produced using one or more single station vertical mechanical or hydraulic presses, or automated multi-station cold forming machines where the pre-formed part is transferred from one station to the next at high speed with each station performing a specific cold forming process.

Cold Forging Advantages(VS hot forging)

●High productivity
●Increased dimensional control.
●Improvement of mechanical properties.
●Excellent dimensional accuracy surface quality

Cold Forging Advantages 2 Cold Forging Advantages

Materials And Products

There are many materials suitable for cold forging process as steel, stainless steel, aluminum, zinc, brass, titanium, bronze...
We have exclusive productive means for forging all kinds of metals, with capacity to produce parts on a wide range of sizes and shapes for various applications in industry (electronics, appliances, hardware, machinery, plumbing, telecommunications, automotive (pine nuts, solenoids, pistons, rods, seat parts, alternators, valves, anti-vibration parts, racks, etc.)

Difference between Hot Forging and Cold Forging

The main difference between hot and cold forging may be summarized as follows: The cold forging manufacturing process increases the strength of a metal through strain hardening at a room temperature. On the contrary, the hot forging manufacturing process keeps materials from strain hardening at high temperature, which results in optimum yield strength, low hardness, and high ductility.

Finally, a manufacturer would choose one process over the other because of economic and quality reasons. The decision is based on the required functions of the desired component, the industry and if it's a mass production or a low volume of customized parts. We provide machined parts.
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