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Pick for coal shearer and processing method thereof

A technology for coal shearers and workpieces, which is applied in the manufacture of tools, slitting machines, earth drilling and mining, etc. It can solve the problems of long time spent on polishing and cleaning, poor bonding ability of phosphating film, and high cleaning cost, so as to improve adhesion And corrosion resistance, improve adhesion, avoid the effect of oil and impurities

Active Publication Date: 2020-04-03
ANHUI AODE MINING MACHINERY & EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To this end, the embodiment of the present invention provides a cutting tooth for a coal shearer and its processing method, which adopts an annealing treatment method of isolated gas convection and hot water cooling, and separates phosphating slag to avoid formation of phosphating slag. The film is mixed with the precipitation to solve the large area of ​​oxidation on the surface of the workpiece caused by the annealing method in the prior art, as well as the generation of a large amount of oil, the long time spent on polishing and cleaning, the high cleaning cost, the large amount of pollution, and the poor adhesion of the phosphating film , the problem of low wear resistance

Method used

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  • Pick for coal shearer and processing method thereof
  • Pick for coal shearer and processing method thereof

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Embodiment 1

[0050] Such as figure 1As shown, the present invention provides a cutting tooth for a coal shearer, comprising a connecting shaft 1 and a cutting top cap 2, the connecting shaft 1 and the cutting top cap 2 are integrally formed, and the connecting shaft 1 and the cutting top cap 2 The size transition sections are all smoothly connected, and the outer surface of the cutting top cap 2 is provided with a number of evenly distributed inner sinking grooves 3, the side section of the inner sinking grooves 3 is a triangular structure, and each of the Outer edges of the inner sinking slot 3 are provided with extended slopes.

[0051] The outer surface connecting the shaft part 1 and the cutting top cap 2 is provided with a wear-resistant phosphating film layer and a saponified film layer. After phosphating and saponification, it can absorb a large amount of lubricating oil to reduce abrasion and increase the corrosion resistance and wear resistance of the pick surface.

Embodiment 2

[0053] In order to obtain the above-mentioned shearer pick, the present invention also designs a processing method for the shearer pick, so as to obtain a wear-resistant phosphating film layer and a saponification film layer on the surface of the pick, such as figure 2 As shown, it mainly includes the following steps;

[0054] Step 100, unloading and smelting, placing the workpieces in the combustion chamber for slow heating;

[0055] Step 200, spheroidizing annealing, taking the workpiece out of the combustion chamber, and controlling the cooling rate of the workpiece;

[0056] The above steps are heat treatment operations for pick workpieces, in which spheroidizing annealing refers to slowly heating the metal to austenitic steel, keeping it for a sufficient time, and then cooling at an appropriate speed.

[0057] The specific steps of spheroidizing annealing will be detailed below, mainly including:

[0058] Step 201, the combustion chamber continues to heat the workpiece...

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Abstract

The embodiment of the invention discloses a pick for a coal shearer, which includes a connecting shaft and a cutting top cap, the connecting shaft and the cutting top cap are integrally formed, and the outer surface of the cutting top cap is provided with several sinking clips It also discloses a method for processing picks used in coal shearers, including the following steps: cutting and smelting; spheroidizing annealing, taking the workpiece out of the combustion chamber, and controlling the cooling speed of the workpiece; The oxide layer is polished and polished, and the oil on the surface of the workpiece is cleaned; one phosphorus saponification; one cold extrusion; acid cleaning; two phosphorus saponification; two cold extrusion; The way of cold control and temperature reduction reduces the cost of workpiece cleaning and improves the adhesion of subsequent phosphorus soap treatment film, and the phosphating reaction pool of the present invention can selectively control ion penetration to prevent phosphating slag from approaching the surface of the workpiece to affect the phosphating film Quality, thereby improving the adhesion and corrosion resistance of phosphating thin film coatings.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of coal mining consumable tools, in particular to a pick for a coal shearer and a processing method thereof. Background technique [0002] Concept Mining picks are one of the vulnerable parts in coal mining and tunneling machinery, and are the main tool for coal falling and crushing. Commonly used materials From the imported and domestic picks actually used in some coal mines in China, the cutter body materials are mostly 42CrMo, 35CrMnSi and other steel types, and some coal mines are also using the newly developed Si-Mn-Mo meta-bainite steel in China. There are many types of picks. The general structure is to inlay carbide cutter heads on the quenched and tempered low-alloy structural steel cutter body. The picks are subjected to high periodic compressive stress, shear stress, and impact load during work. [0003] The main failure modes of picks during use are shedding of the cutt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C35/183C21D1/32C21D9/00C23C22/06
CPCC21D1/32E21C35/183C21D9/00C23C22/06
Inventor 李保华王新廷
Owner ANHUI AODE MINING MACHINERY & EQUIP LTD