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Short-flow processing technology of ferrule roughcast used for turntable bearing

A technology of turntable bearings and processing technology, which is applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of low production efficiency, cumbersome processing methods, high production costs, etc., and achieve the effect of reducing production costs and improving production efficiency

Inactive Publication Date: 2013-01-23
LUOYANG LYC BEARING
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  • Claims
  • Application Information

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Problems solved by technology

It is the main reason why the processing method is cumbersome, the production efficiency is low, and the production cost is high.

Method used

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  • Short-flow processing technology of ferrule roughcast used for turntable bearing

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Embodiment Construction

[0009] The processing technology of the present invention is described in conjunction with the specific examples given, but does not constitute any limitation to the present invention.

[0010] The bearing ring described in the invention is a short-process processing process of the ring ring blank for the slewing bearing with an outer diameter within the range of 500 mm to 1500 mm. The process includes: smelting→casting into a circular casting→cutting the riser→heating the ring Shaped castings→rolling and expanding into annular ferrule blanks, and then normalizing and quenching and tempering heat treatment on the rolled and expanded annular ferrule blanks.

[0011] Take the bearing model 013.30.1220.04 as an example to illustrate. Its process steps are:

[0012] Smelting: use electric arc furnace to smelt 42CrMo steel according to the conventional process, the chemical composition of molten steel (ZG42CrMo) should meet: C 0.38~0.45, Mn 0.60~1.00, Si 0.30~0.60, Cr 0.80~1.20, M...

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Abstract

The invention discloses a short-flow processing technology of ferrule roughcast used for a turntable bearing. The short-flow processing technology comprises the processing steps of carrying out smelting, casting to form an annular casting, cutting a feed head, heating the annular casting, and rolling the annular ferrule roughcast; and then carrying out normalizing and tempering heat treatment on the rolled annular ferrule roughcast. Compared with the existing processing technology, the short-flow processing technology omits the processes of primarily heating an ingot casting, forging (or milling) bar stock, sawing (or carrying hot cutting) the stock, carrying out stock heating for a second time, and carrying out forging, punching and the like, thereby greatly reducing the production cost. Ferrule parts of the turntable bearing, which can meet the technical requirements, can be obtained through the subsequent normalizing and tempering heat treatment. The short-flow processing technology is applied to the ferrule roughcast used for the turntable bearing, and the external diameter of which is within the scope of 500mm-1500mm.

Description

technical field [0001] The invention belongs to the technical field of thermal processing, and mainly relates to a short-flow processing technology for a ring blank for a slewing bearing, especially a short-flow processing technology for an annular ring blank for a slewing bearing with an outer diameter within the range of 500 mm to 1500 mm. Background technique [0002] At present, the ferrule blanks used in the bearing industry adopt the traditional forming method, and the process flow is steelmaking→ingot casting→cutting the cap and tail of the ingot→heating the ingot (primary heating)→forging (or rolling) Bar forming → sawing and blanking → material section heating (secondary heating) → forging → upsetting cake → punching → ring forging heating (third heating) → rolling and expanding into a ring ferrule blank. The traditional processing method of this kind of bearing ring blank is very cumbersome, not only the production efficiency is low, but the production cost is als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00C21D9/40
Inventor 王明礼李昭昆端木培兰孙小东尤蕾蕾陈文君陈小超王丽霞
Owner LUOYANG LYC BEARING
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