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Technique for manufacturing steel grit

A production process and technology of steel grit, applied in the field of metal particle production process, can solve the problems of slow sawing speed, large consumption of steel grit, insufficient sharpness, etc., and achieve the effect of reducing consumption, improving speed and efficiency, and having more edges and corners.

Inactive Publication Date: 2004-08-11
FUJIAN DUOLENG STEEL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The steel grit produced by this method has the following problems: because the steel grit is broken from round steel balls, the resulting steel grit has a large number of arcs, with few edges and corners and is not sharp enough, which leads to cutting during sawing. Slow speed, low efficiency, large consumption of steel grit, and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The steel grit production process comprises the following steps:

[0040] 1. Provide a bearing steel material with angular shape and a quenching device;

[0041] 2. Put the bearing steel material into the quenching device for quenching treatment. The quenching temperature is 800°C, the quenching time is 50 minutes, and the medium in the quenching equipment is nitrogen;

[0042] 3. Provide a first crusher;

[0043] 4. Put the quenched bearing steel material into the first crusher for first-stage crushing to obtain the first-stage steel grit;

[0044] 5. Provide a second crusher;

[0045] 6. Put the first-grade steel grit into the second crusher for second-grade crushing to obtain the second-grade steel grit.

[0046] 7. Provide a third crusher;

[0047] 8. Put the second-grade steel grit into the third crusher for third-grade crushing to obtain the third-grade steel grit.

[0048] The above-mentioned first crusher is a vibrating crusher, the second crusher is a jaw ...

Embodiment 2

[0054] The steel grit production process comprises the following steps:

[0055] 1. Provide the remaining bearing steel corner scraps and a quenching device in the process of roll machining;

[0056] 2. Put the scraps of bearing steel corners into the quenching device for quenching treatment, the quenching temperature is 850°C, and the quenching time is 55 minutes;

[0057] 3. Provide a first crusher;

[0058] 4. Put the quenched bearing steel corner waste into the first crusher for first-stage crushing to obtain the first-stage steel grit;

[0059] 5. Provide the second crusher;

[0060] 6. Put the first-grade steel grit into the second crusher for second-grade crushing to obtain the second-grade steel grit.

[0061] The above-mentioned first crusher is a trembling crusher, and the second crusher is a spoke crusher.

[0062] 7. Provide a tempering device;

[0063] 8. Put the crushed second-grade steel grit into the tempering device for tempering treatment. The tempering ...

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Abstract

A technology for preparing steel sand used as the abrasive material for cutting stone slab includes providing the cornered bearing steel, quenching, crushing, and classifying by solid-solid separation. Its advantages are more corners the steel sand has, high hardness, and high antiwear performance.

Description

technical field [0001] The invention relates to a production process of metal particles, in particular to a production process of steel grit used as an abrasive to grind and cut stone plates. Background technique [0002] In the prior art, abrasive material—steel grit is used when cutting stone slabs, and the steel grit generates relative motion with the saw body (stone slab) due to the reciprocating motion of the saw blade, thereby realizing the sawing of the saw body. [0003] The current method of making steel grit is to smelt scrap steel and add alloying elements to meet the required chemical composition, inject molten steel into a rotary pelletizing machine to make steel balls, then drop them into a pool for cooling, and then press the cooled steel balls into pellets The size is graded, and it is quenched with different heating temperatures and heating times. Finally, the quenched steel balls are broken into angular steel sands, and then tempered and screened to obtain ...

Claims

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Application Information

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IPC IPC(8): B22F9/04B28D1/06C09K3/14
CPCY02W30/50
Inventor 王新辉
Owner FUJIAN DUOLENG STEEL GROUP
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