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High-performance high-hardness mining machinery gear ring forge piece and manufacturing method

A manufacturing method and high hardness technology, applied in the field of ring gear ring forging manufacturing, can solve the problems of key technology blockade, difficult to refer to materials, etc., to achieve the effect of optimizing the process, shortening the delivery time, and improving the comprehensive mechanical properties

Pending Publication Date: 2022-04-12
AVIC EXCELLENCE FORGING WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since foreign countries only provide a range of ingredients for this type of material, and block key technologies, it is difficult to obtain relevant reference materials from abroad, so we can only analyze and research by ourselves to accumulate experience

Method used

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  • High-performance high-hardness mining machinery gear ring forge piece and manufacturing method
  • High-performance high-hardness mining machinery gear ring forge piece and manufacturing method
  • High-performance high-hardness mining machinery gear ring forge piece and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A high-performance and high-hardness mining machinery ring gear ring forging, in terms of weight percentage, its raw materials include the following components:

[0054] C: 0.38%; Si: 0.36%; Mn: 0.67%; Cr: 1.10%; Mo: 0.25%; V: 0.1%; P: 0.01%; S: 0.001%; , Si, Mn, Cr, and Mo are controlled according to the middle and upper limits, P and S are controlled according to the middle and lower limits, and non-metallic inclusions are controlled according to Table 1.

[0055] Table 1

[0056]

[0057] Such as Figure 1-2 Shown, a kind of manufacturing method of high-performance high-hardness mine machinery ring gear ring forging, comprises the following steps:

[0058] 1) Cutting: The raw material is cut by cold sawing nozzle, and after removing impurities, the riser is first collected on the press and then heated;

[0059] 2) Forging billet making and punching: three upsetting and two drawing are used when opening the billet, the upsetting ratio of each step is controlled ...

Embodiment 2

[0072] The difference between this embodiment and Embodiment 1 is that the raw materials of the high-performance and high-hardness mining machinery ring gear ring forging in this embodiment include the following components in terms of weight percentage:

[0073] C: 0.39%; Si: 0.37%; Mn: 0.70%; Cr: 1.10%; Mo: 0.25%; V: 0.05%; P: 0.005%; S: 0.0009%; , Si, Mn, Cr, and Mo are controlled according to the middle and upper limits, P and S are controlled according to the middle and lower limits, and non-metallic inclusions are controlled according to Table 1.

[0074] Table 1

[0075]

[0076] The rest are the same as embodiment 1.

Embodiment 3

[0078] The difference between this embodiment and Embodiment 1 is that the raw materials of the high-performance and high-hardness mining machinery ring gear ring forging in this embodiment include the following components in terms of weight percentage:

[0079] C: 0.40%; Si: 0.3%; Mn: 0.68%; Cr: 1.08%; Mo: 0.24%; V: 0.09%; P: 0.005%; S: 0.002%; , Si, Mn, Cr, and Mo are controlled according to the middle and upper limits, P and S are controlled according to the middle and lower limits, and non-metallic inclusions are controlled according to Table 1.

[0080] Table 1

[0081]

[0082] The rest are the same as embodiment 1.

[0083] Parts that are not specifically described can be used in the prior art, and will not be described in detail here.

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Abstract

The invention discloses a high-performance and high-hardness mining machinery gear ring forge piece and a manufacturing method thereof. Raw materials comprise the following components: 0.36-0.40% of C; si: 0.17%-0.37%; mn: 0.55% to 0.70%; 1.00% to 1.10% of Cr; 0.2% to 0.25% of Mo; 0.05% to 0.10% of V; less than or equal to 0.015% of P; s: less than or equal to 0.010%; the rest is non-metallic inclusions; the contents of C, Si, Mn, Cr and Mo are controlled according to middle upper limits, and the contents of P and S are controlled according to middle lower limits. By optimizing raw material components, a forging blank manufacturing process and a heat treatment system, automatic production of the 35CrMo material is achieved, the situation that the hardness of the material is low after hardening and tempering can be changed, the one-time delivery inspection percent of pass of products is increased, the reworking risk of the products is avoided, the delivery time is shortened, and the working conditions of high strength, high load, distortion and impact of mining machinery are met.

Description

technical field [0001] The invention belongs to the technical field of ring gear ring forging manufacturing, and in particular relates to a high-performance and high-hardness mining machinery ring gear ring forging and a manufacturing method. Background technique [0002] Mining machinery is directly used for mineral mining and other operations, and contributes a lot to the national economy. The quality level of China's mining machinery also reflects the manufacturing level of a country from the side. In recent years, the country has vigorously developed infrastructure, and the raw materials mined by mining machinery are also widely used in infrastructure such as rail transit, railways, construction, and water conservancy. The quality of the ring gear is particularly important because the working conditions of mining machinery are often subject to impact, bending, and high loads. 35CrMo steel is one of the commonly used materials for mining machinery. It has the characteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C21D1/18C21D9/40B21J1/04B21J5/00B21J5/10B21K1/76
Inventor 郭亮
Owner AVIC EXCELLENCE FORGING WUXI
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