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Production method of cutting picks of coal mining machine

A production method and coal mining machine technology, applied in the direction of cutting machinery, etc., can solve problems such as low-temperature salt failure

Active Publication Date: 2013-04-10
安徽省皖江机电设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because in the production process, high-temperature salt is always brought into the low-temperature salt tank, and the low-temperature salt pollution caused by low-temperature salt premature failure is eliminated as waste

Method used

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  • Production method of cutting picks of coal mining machine
  • Production method of cutting picks of coal mining machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the production method of pickaxe tooth

[0023] 1. Preparation before welding

[0024] 1. Preparation before welding of tooth head alloy

[0025] a. Take the case as a batch unit to sample and measure the tolerance range of the outer diameter of the alloy. If it is greater than 0.1mm, all alloys should be sorted. Sorting grades are distinguished in units of 0.8mm. For example, less than 0.8mm; greater than or equal to 0.8mm and less than 0.16mm.

[0026] b. Take the box as a batch unit to take samples and check the carbon oxides on the surface of the alloy. After rubbing a few alloys by hand, observe whether there is gray or black on the surface of the palm of the hand. If so, the alloy needs to be surface treated.

[0027] c. Counting from the date of production, alloys that are more than two months old will be subjected to a physical tumbling process in addition to the inspection in item a. Tumble in the barrel for no less than two hours. After the...

Embodiment 2

[0045] Embodiment 2: the production method of knife-shaped tooth

[0046] 1. Preparation before welding

[0047] 1. Preparation before welding of tooth head alloy

[0048] a. Take the case as a batch unit to sample and measure the tolerance range of the outer diameter of the alloy. If it is greater than 0.1mm, all alloys should be sorted. Sorting grades are distinguished in units of 0.8mm. For example, less than 0.8mm; greater than or equal to 0.8mm and less than 0.16mm.

[0049] b. Take the box as a batch unit to take samples and check the carbon oxides on the surface of the alloy. After rubbing a few alloys by hand, observe whether there is gray or black on the surface of the palm of the hand. If so, the alloy needs to be surface treated.

[0050] c. Counting from the date of production, alloys that are more than two months old will be subjected to a physical tumbling process in addition to the inspection in item a. Tumble in the barrel for no less than two hours. Afte...

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Abstract

The invention discloses a production method of cutting picks of a coal mining machine. The production method comprises the following steps of: enabling the cutting picks which are well matched to sequentially enter a heating area of an inductor, and controlling the automatic feeding meter at 12 seconds-14 seconds; enabling the cutting picks to enter a welding area, firstly supplementing borax at the upper part of an alloy gear head, tightly shaking an alloy for a plurality of times after melting of copper, performing heat treatment when the temperature of an isothermobath is not less than 230 DEG C, gradually clamping out the well welded cutting picks, arranging into a hanging hook, rapidly lifting the hanging hook with the hand, immersing the cutting picks into a saline solution of the isothermobath, swinging left and right for 3 times, then hanging a cross rod, totally immersing the gear head alloy in the saline solution, and rapidly starting to supply water for cooling when temperature achieves 265 DEG C during feed-discharge balance; staying the cutting picks for not less than 30 minutes under the state that the variation in the isothermobath does not exceed a 20-DEG C constant temperature zone; and lifting out the cutting picks, performing salt leaching, and then washing and cooling. The difference between the production method disclosed by the invention and the prior art is that two times of heating are combined into a whole and can be completed once, thus the brazing quality is ensured, and the heat treatment quenching quality is also improved.

Description

technical field [0001] The invention relates to a production method of a coal shearer pick. Background technique [0002] The pick is one of the vulnerable parts in coal mining and tunneling machinery. It is the main tool for coal falling and crushing. Its performance directly affects the production capacity, power consumption, working stability and stability of coal mining machinery. The service life of other related parts. The general structure is to inlay the hard alloy cutter head on the quenched and tempered low alloy structural steel cutter body. [0003] There are six main processes in the production of general picks, which are blanking, die forging, machining, hard alloy brazing, heat treatment, surface treatment and antirust treatment. The four main processes that have a greater impact on product performance and quality are die forging, machining, hard alloy brazing, and heat treatment. Machining is relatively easy to master and control for general enterprises, w...

Claims

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Application Information

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IPC IPC(8): E21C35/18
Inventor 冯夏苗
Owner 安徽省皖江机电设备制造有限公司
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