Casting method of the middle groove side of the heavy-duty scraper machine

A scraper and groove technology, which is applied in casting molding equipment, molds, cores, etc., can solve problems such as failure to meet quality requirements, poor surface and internal quality of castings, backward technology, etc., and achieve high surface dimensional accuracy, The effect of simple casting process and convenient operation

Active Publication Date: 2016-03-23
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cost of the above-mentioned process is low, the technology is backward, and the surface and internal quality of the casting are poor, which can no longer meet the quality requirements of the current heavy-duty scraper and support in coal mines.

Method used

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  • Casting method of the middle groove side of the heavy-duty scraper machine
  • Casting method of the middle groove side of the heavy-duty scraper machine

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Embodiment Construction

[0020] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] A casting method for the middle groove side of a heavy-duty scraper machine, comprising the following steps:

[0022] (1) Sand mixing: Mix silica sand, water glass and curing agent. The amount of water glass added is 2.2% to 2.5% of the weight of silica sand, and the amount of curing agent added is 15% of the weight of water glass.

[0023] When the lowest temperature of the day is <5°C, turn on the heater of the water glass box, and set the temperature of the heater temperature control switch to 20-35°C.

[0024] Silica sand, water glass and curing agent were purchased from Chengdu Keshen Company.

[0025] (2) Modeling: use the mold to prepare the upper box and the lower box, in which the pouring system is distributed on the upper box, such as figure 1 As shown, the four corners of the upper box are respectively provided with a therm...

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Abstract

The invention relates to the field of cast pieces of mining equipment, and particularly relates to a method for casting a middle ledge of a heavy scraper. The method comprises the following steps: (1) mixing sand; (2) molding; (3) closing a box; (4) pouring for not more than 1 minute at the pouring temperature of 1520 DEGC to 1560 DEG C; and (5) opening the box, and cutting a feeder head of the cast piece. The method is reasonable in design, simple in the casting process, convenient to operate and low in cost; the dimensional accuracy of the surface of the cast piece is high; the cost of the after-treatment procedures of the cast piece is lowered; and the cast piece is free of cracking tendency.

Description

technical field [0001] The invention relates to the field of mining equipment castings, in particular to a casting method for a groove side in the middle of a heavy-duty scraper machine. Background technique [0002] The scraper conveyor is widely used in the daily mining and transportation of coal mines. The scraper conveyor for coal mines adopts a steel trough, open type, which is convenient for the coal mined by the shearer to fall onto the scraper conveyor. The steel trough adopts a double-chain structure , Traction wear-resistant steel plate. Such products require high production technology and high system stability. [0003] At present, there are many casting processes used in coal mine equipment castings at home and abroad, and they are relatively complicated. According to the different operating conditions of each mine, the casting processes used are also very different. [0004] In foreign countries, the casting method of the groove side in the middle of the scrap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/02B22C9/08B22C1/18
Inventor 李胜高建光樊祥军蔡明华卢文君
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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