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Compound steel ball tempering process by using waste heat

A waste heat and steel ball technology, applied in heat treatment furnaces, manufacturing tools, heat treatment equipment, etc., can solve problems such as poor uniformity, multiple limitations, and large hardness loss of steel balls, so as to improve energy utilization and market competitiveness , Improve the effect of metallographic structure

Active Publication Date: 2014-08-06
JIANGYIN HUAZHENG METAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 6. The specific weight is greater than 7.85g / cm3;
[0017] However, it has been found through actual production that the above-mentioned process of producing hot-rolled steel balls also has the following outstanding problems: there are many limitations in the primary tempering process and equipment in step 4, resulting in high energy consumption. The loss of ball hardness is large and the uniformity is poor, so it is urgent to improve

Method used

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  • Compound steel ball tempering process by using waste heat
  • Compound steel ball tempering process by using waste heat
  • Compound steel ball tempering process by using waste heat

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Embodiment Construction

[0044] see Figure 1~5 , a steel ball composite waste heat tempering process related to the present invention, the process includes the following steps:

[0045] Step 1, one tempering;

[0046] Step two, air cooling;

[0047] Step three, secondary tempering;

[0048]The device used in the step 1 and step 3 is a double-layer tempering device 1, the double-layer tempering device 1 includes a lower bracket 1.1 and an upper bracket 1.2 installed above the lower bracket 1.1, the lower bracket 1.1 and the upper bracket The lower chain conveyor belt 1.3 and the upper chain conveyor belt 1.4 are respectively installed horizontally on the bracket 1.2, and a waste heat pipe system 4 is installed on the above-mentioned lower bracket 1.1 and the upper bracket 1.2. Specifically, the waste heat pipe system 4 includes Waste heat input pipe 4.1, upper waste heat pipe 4.2 and lower waste heat pipe 4.3, one end of the waste heat input pipe 4.1 is connected to the waste heat source (such as t...

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Abstract

The invention relates to a compound steel ball tempering process by using waste heat, which comprises the following steps: 1, primary tempering; 2, air cooling; 3, secondary tempering. Devices adopted in the above steps comprise a double-layer tempering device (1), a steel ball severe-convection cooling device (2), high-temperature-resistant steel ball lifting conveyors (3) and a waste heat pipe system (4). The compound steel ball tempering process by using the waste heat, provided by the invention, is low in energy consumption and good in tempering effect.

Description

technical field [0001] The invention relates to a tempering process, in particular to a process for tempering and heating hot-rolled steel balls by using the residual heat of high-temperature flue gas generated during early heating, and belongs to the technical field of hot-rolled steel ball production. Background technique [0002] At present, hot-rolled steel ball is a brand-new rolling process technology, which is a technological breakthrough in the ball milling steel ball manufacturing industry, and is gradually replacing cast balls. The hot-rolled steel ball process has the following characteristics: [0003] 1. Hot-rolled steel ball has many advantages of steel. It is rolled and formed by special equipment and then heat-treated to become a high-quality grinding ball; [0004] 2. High production efficiency, large production capacity, mechanized ball rolling production, high degree of automation, no manual production process, less labor force, and less interference from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/36C21D1/18
Inventor 倪建峰
Owner JIANGYIN HUAZHENG METAL TECH
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