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Honing oilstone

A technology for honing oil stones and diamonds, applied in the field of metal bonds, which can solve the problems of high cost and low heat generation, and achieve the effects of long service life, low cost and good self-sharpening

Inactive Publication Date: 2013-12-11
上海鸿宁珩磨机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the inner holes of automobile gears are all processed by imported honing machines, which have high requirements for honing stones, which require uniform wear, long life, and low heat generation. Domestic honing stones are difficult to meet the above requirements. Honing stones mainly rely on imports, and the cost is high. Therefore, this field still needs to develop a new type of honing whetstone with sharp grinding, good self-sharpening and long service life to replace the expensive imported whetstone and fill the domestic gap

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In this embodiment, raw materials are provided in the following weight percentages: 63wt% copper-tin alloy powder, 5wt% silver, 25wt% cobalt powder and 7wt% tin. Put copper-tin alloy powder, silver, cobalt powder, tin and diamond into the vortex mixer for mixing, after mixing thoroughly, put the mixture into a mold for vacuum pressing, the vacuum degree is 1×10 -3 -1×10 -6 Pa, the pressing temperature is 590° C., the pressing time is 10 minutes, and the pressing pressure is 95 MPa. Carry out sintering after pressing, the sintering temperature is 500 ℃, keep warm for 10 minutes to obtain honing oilstone.

Embodiment 2

[0036] In this embodiment, raw materials are provided in the following weight percentages: 58wt% copper-tin alloy powder, 7wt% silver, 20wt% cobalt powder and 15wt% tin. Put copper-tin alloy powder, silver, cobalt powder, tin and diamond into the vortex mixer for mixing, after mixing thoroughly, put the mixture into a mold for vacuum pressing, the vacuum degree is 1×10 -3 -1×10 -6 Pa, the pressing temperature is 625° C., the pressing time is 6 minutes, and the pressing pressure is 50 MPa. Carry out sintering after pressing, the sintering temperature is 650 ℃, keep warm for 7 minutes to obtain honing oilstone.

Embodiment 3

[0038] In this embodiment, raw materials are provided in the following weight percentages: 59wt% copper-tin alloy powder, 6wt% silver, 27wt% cobalt powder and 8wt% tin. Put copper-tin alloy powder, silver, cobalt powder, tin and diamond into the vortex mixer for mixing, after mixing thoroughly, put the mixture into a mold for vacuum pressing, the vacuum degree is 1×10 -3 -1×10 -6 Pa, the pressing temperature is 600° C., the pressing time is 7 minutes, and the pressing pressure is 70 MPa. Carry out sintering after pressing, the sintering temperature is 630 ℃, keep warm for 8 minutes to obtain honing oilstone.

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Abstract

The invention discloses a honing oilstone. The honing oilstone, by weight, comprises 3-10% of silver, 15-30% of cobalt powder, 3-20% of tin, and the balance is copper-tin alloy powder. The volume ratio of diamond is 50-100%. The invention further discloses a method for preparing the honing oilstone. The honing oilstone is sharp in grinding, good in self-sharpening, long in service life, low in cost, and easy to prepare.

Description

technical field [0001] The invention relates to a metal bond, in particular to a honing stone. Background technique [0002] Honing is a finishing process after casting, pouring, drilling, boring or reaming. In the last ten years, honing has developed into a finishing process for inner holes with large removal volume and high cutting efficiency. [0003] Honing offers many solutions for various applications. The most commonly used honing process is to use honing oilstone. Insert the stone into the tubular mandrel, which has a wedge that matches the wedge on the stone seat. When the mandrel rotates, the surface speed reaches 60-90m / min. In order to be able to move axially, the workpiece or tool needs to be stroked. When the oilstone moves relative to the inner hole of the workpiece, it forms a spiral cross pattern, and the angle of the cross pattern depends on the spindle speed and stroke speed. During the rotation and stroke movement, the wedge movement pushes the oil s...

Claims

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Application Information

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IPC IPC(8): B24B33/08
Inventor 沈浩陈忠耀
Owner 上海鸿宁珩磨机械有限公司
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