Manufacturing device and production process of forged steel balls

Abstract

The invention provides a manufacturing device and production process of forged steel balls. A numerical control die forging hammer is mainly used; the numerical control die forging hammer comprises ahammer head, a machine body, a sliding block, an upper anvil block, a lower anvil block, a refrigerating machine and a steel ball die; the steel ball die comprises an upper clamping tire, a lower clamping tire, an upper die core, a lower die core, an ejector rod and a discharging rod; the steel ball die is a closed type die forging steel ball die. A production line mainly comprises a heating furnace, a bar shearing machine, a transferring device, the numerical control die forging hammer, a rounding machine and an isothermal quenching machine. The forged steel balls produced by the numerical control die forging hammer and the equipment of the production line device have the advantages of being good in steel ball roundness, high in steel ball quality, high in production efficiency and the like.

Description

technical field [0001] The invention relates to a manufacturing equipment system and a production process of forged steel balls, which belong to the field of forging and pressing manufacturing. Background technique [0002] Wear-resistant steel balls are divided into grinding steel balls, forged steel balls, and cast steel balls according to the production and processing technology; according to the processing materials, they are divided into bearing steel balls, stainless steel balls, carbon steel balls, alloy balls, etc. Among them, the alloy steel ball is a spherical iron alloy wear-resistant body produced by forging, spinning, rolling and casting with carbon, chromium, manganese, molybdenum, etc. as the main added metal elements. Mine balls, cement balls, etc. are the most important components. Steel ball is a general term for steel balls, steel segments and special-shaped grinding bodies. From the shape, it can be divided into perfect round ball, capsule ball, ellipse...

AI Technical Summary

Problems solved by technology

[0003] At present, the cast steel ball has a rough surface, and the part of the sprue is prone to flattening and deformation and out of round during use, which affects the grinding effect; the interior is loose, due to the use of pouring molding, the internal structure of the ball is coarse, and during use High crushing rate, low impact toughness, the bigger the ball, the bigger the mill, the greater the probability of crushing; it is not suitable for wet grinding, the wear resistance of cast balls depends on the chromium content, the higher the chromium content, the more wear-resistant , but the characteristic of chromium is that it is easy to corrode. The higher the chromium, the easier it is to be corroded, especially the sulfur in the ore. The use of chromium balls under the above wet grinding conditions will increase the cost and reduce the output. The cast steel ball market is gradually being forged steel ball instead

[0004] At present, the equipment for forging steel balls on the market is mainly an air hammer, which forges steel balls. Because the impact energy of the air hammer is small, each steel ball needs to be struck repeatedly for a long time, and the production efficiency is low, so it is difficult to meet the production demand; And the air hammer forging steel balls, because of its small striking energy and long striking time, the temperature of the large-diameter steel balls has dropped to the extent that the forging cannot be continued before the large-diameter steel balls are hit, so large-diameter steel balls cannot be produced, thus Limit the use range and service life of the steel ball; in addition, because the air hammer cannot accurately control the striking energy, limited by the mold used, the upper mold and the lower mold cannot form a complete spherical shape when striking, resulting in the forged steel ball being round The speed is not enough; if the upper mold is forced to hit the lower mold, the equipment will be damaged quickly

[0005] In the traditional forging process of steel balls, the steel balls are not filled with the upper and lower bottoms of the mold during the forging process, resulting in two flat end faces of the forged steel balls, which also leads to a low service life

In addition, forged steel balls also have problems such as uneven internal metal phase structure.

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