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A method for repairing hydraulic columns of waste mining machinery and equipment parts

A technology of hydraulic columns and mechanical equipment, applied in heat treatment equipment, furnaces, manufacturing tools, etc., can solve problems such as damaged parts and insufficient repair of equipment parts, and achieve the effects of prolonging service life, dense tissue, and rational utilization

Active Publication Date: 2019-10-08
甘肃兰煤机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The repair of equipment parts in the prior art is not thorough enough. Although a certain repair effect has been achieved to a certain extent, the equipment parts are affected by factors such as friction during long-term use, which makes the parts seriously damaged.

Method used

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  • A method for repairing hydraulic columns of waste mining machinery and equipment parts
  • A method for repairing hydraulic columns of waste mining machinery and equipment parts

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Experimental program
Comparison scheme
Effect test

Embodiment

[0021] A method for repairing a hydraulic column of waste mining machinery and equipment, comprising the following steps:

[0022] 1) Determine the damage area of ​​the hydraulic column, measure the size of the surface of the hydraulic column, and inspect the curvature at the same time to obtain the wear thickness D and runout M;

[0023] 2) Whether the wear thickness d in the judgment step 1) exceeds 45% of the wear thickness D of the original chrome-plated layer, enter the runout judgment after the wear thickness judgment is completed, and judge whether the absolute value of the difference between the runout m and the original runout M is Greater than 0.4mm;

[0024] 3) When the wear thickness d>45% of the original chrome-plated wear thickness D, and the absolute value of the difference between the run-out m and the original run-out M≤0.4mm, enter step 4); when the wear thickness d≤45% of the worn thickness D of the original chrome plating layer, and the absolute value of t...

experiment example

[0029] One, make following comparison test for the wear amount of the embodiment of the present invention relative to the prior art, as shown in table 1:

[0030]

[0031]As can be seen from the above table, the wear amount of the present invention is 247.5×10 -5 g relative to the wear amount of the prior art 279.5×10 -5 g decreased by 11.45%.

[0032] 2. The addition of Ni60A+chromium carbide alloy powder or Ni60A+42CrMo alloy powder to the corrosion resistance of the cladding layer is shown in Table 2:

[0033]

[0034] As can be seen from Table 2, when the addition of Ni60A+chromium carbide alloy powder of the present invention is 20%, the corrosion rate of the cladding layer is the smallest, and when the addition of Ni60A+42CrMo alloy powder is 15%, the corrosion rate of the cladding layer is the smallest.

[0035] 3. The hardness of the surfacing layer under different surfacing process parameters is shown in Table 3:

[0036] Numbering Welding current ...

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Abstract

The invention discloses a method for repairing a part hydraulic upright post of waste mining mechanical equipment and belongs to the technical field of equipment maintenance. According to the method,the hydraulic upright post is repaired based on the wear thickness and the run-out value so as to prevent the large deviation in the repair process and meanwhile reduce the wearing capacity of the equipment to the maximum extent and prolong the service life. According to the method, the wear amount is 247.5*10<-5> g and decreases by 11.45 % compared with the wear amount of 279.5*10<-5> g in the prior art; when the content of added alloy powder of ni60A+chromium carbide is 20 %, the corrosion rate of a cladding layer is the smallest; when the content of the added alloy powder of Ni60A+42 CrMo is 15 %, the corrosion rate of the cladding layer is the smallest; and when the hydraulic upright post of the waste mine mechanical equipment is repaired, the welding current is 110 A, the hardness value of the double welding layers reaches 64.3 HRC, and the method has the higher economic benefits.

Description

technical field [0001] The invention belongs to the technical field of equipment maintenance, and in particular relates to a method for repairing a hydraulic column of waste mine mechanical equipment parts. Background technique [0002] Mining machinery is directly used for mineral mining and enrichment and other operations. Including mining machinery and beneficiation machinery. The working principle and structure of prospecting machinery are mostly the same or similar to the mining machinery used to mine similar minerals. In a broad sense, prospecting machinery also belongs to mining machinery. Mining machinery and equipment refers to machinery specialized in mining, mineral processing and prospecting. A large number of cranes, conveyors, fans and drainage machinery used in mining operations are collectively referred to as mining machinery and equipment. Mining machinery and equipment are mainly divided into mining equipment, mineral processing equipment, and prospecting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C21D9/00C21D1/26C21D1/28B23P6/00C10M169/04C10N30/06
CPCB23P6/00C10M169/044C10N2030/06C21D1/26C21D1/28C21D9/0068C23C24/103
Inventor 龚成乐龚大存
Owner 甘肃兰煤机械制造有限公司
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