Why do many mental parts use forgings without castings?

1.the forming principle of forgings and castings:

A forging is an object to which a metal is pressed to shape a desired shape or a suitable compressive force by plastic deformation. This force is typically achieved by using a hammer or pressure. The forging process creates a refined grain structure and improves the physical properties of the metal. In the practical use of components, a correct design enables the particles to flow in the direction of the main pressure. The casting is a metal molded object obtained by various casting methods, that is, the smelted liquid metal is poured into a pre-prepared mold by pouring, injecting, inhaling or other casting method, and after cooling, after falling sand, cleaning and then Processing, etc., the resulting object with a certain shape, size and performance.

2.forgings have better performance than castings:

Metals are forged to improve their structural and mechanical properties. After the hot-formed deformation of the cast structure by the forging method, the original coarse dendrites and columnar grains become the equiaxed recrystallized structure with fine grains and uniform size due to the deformation and recrystallization of the metal, so that the original segregation in the steel ingot, The compaction and welding of loose, stomata and slag inclusions make the structure more compact and improve the plasticity and mechanical properties of the metal. The mechanical properties of castings are lower than those of forgings of the same material. In addition, the forging process can ensure the continuity of the metal fiber structure, so that the fiber structure of the forging piece is consistent with the shape of the forging piece, and the metal streamline is complete, which can ensure the good mechanical properties and long service life of the part by precision die forging and cold extrusion. Forgings produced by processes such as warm extrusion are incomparable to castings.

3.the main equipment used in the production of forgings:

The forging parts production equipment mainly includes two types of hammers and presses:According to the driving medium, Forging hammers are divided into steam hammers, air hammers, belt hammers and hydraulic hammers ;according to the forming method of forgings, they can be divided into die forging hammers and free forging hammers; According to the control method, it can be divided into CNC forging hammer and manual control forging hammer; since the energy utilization rate of steam hammer and air compressor hammer is far less than that of electro-hydraulic hammer/hydraulic hammer, many forging hammer manufacturers have stopped producing such forging hammer. In recent years, some forging hammer manufacturers have upgraded the die forging electro-hydraulic hammer into a strike capability and announced PLC control, which greatly reduced the dependence on the forging workers' operating experience and provided the possibility of realizing forging automation. Presses can be roughly divided into crank presses, screw presses and hydraulic presses according to different power transmission modes. The crank press is an eccentric shaft/crankshaft that drives the slider to move up and down through the connecting rod, including an open punch and a closed hot forging press with small tonnage; the screw press drives the slider through the rotation of the screw without changing direction. The up and down movement can be divided into friction screw presses and electric screw presses; screw presses and hot die forging presses are generally used in the die forging industry. The working principle of the hydraulic machine is that the hydraulic oil pushes the piston to move up and down, which can be applied to die forging or free forging.

Anyang forging began in 1956. It was the manufacturer of the forged air hammer specified by the former Ministry of Machinery Industry. The drafting unit for forging equipment such as air hammer and electro-hydraulic hammer was drafted. The main products are C41 series air hammer, electro-hydraulic hammer, CNC electro-hydraulic hammer, hydraulic open die forging hammer,forging manipulator, electric screw press, forging manipulator, mechanical billiet shearing machine,roll forging machine,charging manipulator, hydraulic anchor machine and other complete forging equipment and other hydraulic equipment.If you want to know more details about our company and products,please refer our official website:http:www.chinesehammers.com

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