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Column nail roller surface repairing method of novel high-pressure roller mill

A technology of high-pressure roller mills and repair methods, which is applied in the direction of welding media, arc welding equipment, welding/cutting media/materials, etc., can solve the problems of lack of effective repair technology, reduced equipment operation rate, and reduced roller surface life. The effect of strong bonding, short time required, and improved service life

Active Publication Date: 2015-04-22
MAANSHAN GELIN MINING & METALLURGY ENVIRONMENTAL PROTECTION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the limited wear resistance of the wear-resistant block and wear-resistant electrode of the existing roller mill, the roller sleeve substrate is quickly worn out, its service life is short, and the equipment operation rate is greatly reduced, especially for the stud roller surface, Due to various reasons, the studs peel off from the substrate with the surface of the roller sleeve, fall off, and pits appear on the surface of the roller sleeve, but cemented carbide cannot be welded, and other materials cannot replace cemented carbide, which greatly shortens the life of the roller surface. reduction, and the lack of effective repair technology, the present invention provides a method for repairing the roller surface of the stud roller surface of the high-pressure roller mill, which can greatly improve the service life of the end surface of the roller sleeve, and effectively prevent the Falling off, resulting in accelerated wear of the roller surface, improving the service life of the roller sleeve, and the method is simple, the operation time is short, and it is convenient for on-site work

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  • Column nail roller surface repairing method of novel high-pressure roller mill

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Effect test

Embodiment 1

[0032]Due to various reasons, the surface of the stud roller surface of the roller sleeve of the high-pressure roller mill will fall off with the matrix, and the thickness of the shedding is basically the same as the length of the stud. Once this peeling phenomenon occurs, the roller surface must be repaired, otherwise the equipment will be unusable, and the entire roller sleeve will eventually be replaced.

[0033] A method for repairing the roller surface of a stud roller surface high-pressure roller mill, the steps of which are as follows:

[0034] (1) Select the high-pressure roller mill roll surface 6 with pits on the surface to be repaired, and clean the pits. To clean the pits, first use a gas cutting gun to cut off the stripped surface, and then use a grinder to grind the bottom surface and the surface 1 cm away from the edge. Edge polishing, slag cleaning;

[0035] (2) Surfacing a layer of 3mm thick connection layer 5 at the bottom of the pit, using MIG welding, the ...

Embodiment 2

[0042] A method for repairing the roller surface of a stud roller surface high-pressure roller mill, the steps of which are as follows:

[0043] (1) Select the roll surface of the high-pressure roller mill with pits on the surface to be repaired, and clean the pits. To clean the pits, first use a gas cutting gun to cut off the stripped surface, and then use a grinder to grind the bottom surface and the edge to 1 cm away from the edge. Polishing, deslag cleaning;

[0044] (2) Surfacing a layer of 3mm thick connection layer at the bottom of the pit, using MIG welding, the composition and mass fraction of the welding wire material are: carbon content is 2%, chromium content is 23%, nickel content is 10%, The balance is iron; the diameter of the welding wire is 1.2mm; the current is 125A; the voltage is 22V; the welding speed is 15cm / min;

[0045] (3) prepare the cemented carbide stud that is sheathed with stainless steel sleeve, the material of cemented carbide stud is tungsten ...

Embodiment 3

[0051] A method for repairing the roller surface of a stud roller surface high-pressure roller mill, the steps of which are as follows:

[0052] (1) Select the roll surface of the high-pressure roller mill with pits on the surface to be repaired, and clean the pits. To clean the pits, first use a gas cutting gun to cut off the stripped surface, and then use a grinder to grind the bottom surface and the edge to 1 cm away from the edge. Polishing, deslag cleaning;

[0053] (2) Surfacing a layer of 3mm thick connection layer at the bottom of the pit, using MIG welding, the composition and mass fraction of the welding wire material are: carbon content is 2%, chromium content is 20%, nickel content is 12%, The balance is iron; the diameter of the welding wire is 1.2mm; the current is 125A; the voltage is 24V; the welding speed is 15cm / min;

[0054] (3) prepare the cemented carbide stud that is sheathed with stainless steel sleeve, the material of cemented carbide stud is tungsten ...

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Abstract

The invention discloses a column nail roller surface repairing method of a novel high-pressure roller mill, and belongs to the technical field of repairing of ore and rock crushing equipment. Firstly, a roller surface to be repaired, having a pit on the surface, of the high-pressure roller mill is selected; the pit is cleaned; then, a connecting layer with a thickness of 3 mm is overlay welded at the bottom of the pit; hard alloy column nails coated with stainless steel covers are prepared; connecting welding layers between all the stainless steel covers are covered by wear resistant welding layers; a series of procedure design guarantees firmer combination between the hard alloy column nails and the roller surface; and the method has the advantages of long service life of a roller sleeve, more wear resistance of roller sleeves, convenience for operation, cost saving, simple operation, reasonable design and easy repairing.

Description

technical field [0001] The invention belongs to the technical field of repairing of ore and rock crushing equipment, and relates to a method for repairing the roller surface of a stud roller surface of a high-pressure roller mill, and more specifically, relates to a stud fall-off on the stud roller surface, or a roller sleeve matrix Layer peeling, resulting in the separation of the studs and the roll sleeve matrix into pieces, which can greatly improve the service life of the end face of the roll sleeve, effectively prevent the accelerated wear of the roll surface caused by the fall of the studs on the top surface of the roll sleeve, and improve the The service life of the roller sleeve is long, the method is simple, the operation time is short, and it is convenient for on-site work. Background technique [0002] High-pressure roller mill is a new type of energy-saving grinding equipment that came out in the mid-1980s. It is one of the intermediate equipment in the process o...

Claims

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Application Information

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IPC IPC(8): B23P6/00B23K9/04B23K35/30
CPCB23K9/042B23K35/3086B23P6/00
Inventor 于江梁锋姜立新李书会曹铁峰汪再青
Owner MAANSHAN GELIN MINING & METALLURGY ENVIRONMENTAL PROTECTION EQUIP
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