Micro-indentation tooth plate

A micro-indentation, tooth plate technology, applied in the direction of wrench, wrench, manufacturing tools, etc., can solve the problem of difficult to control the indentation of the clamping degree of the tooth plate, avoid poor welding, no solder coating, good sharpness Effect

Pending Publication Date: 2021-01-26
江苏韦尔博新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a micro-indentation dental plate based on the clamping degree of the existing dental plate and the difficulty in controlling the indentation.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0035] To prepare a micro-indentation tooth plate for casing pliers, it is required to have small indentation on the casing, small surface damage, and normal tightness.

[0036] Solution: Use cemented carbide particles as the cemented carbide anvil material of grade YG8, with a particle size of 35 / 40 mesh. The brazing solder is a nickel-based alloy of BNi2 grade, with a particle size of 35 mesh to 100 mesh. Using vacuum brazing process

[0037] The substrate of the micro-indentation dental plate is steel, and the substrate is selected from steel such as 30Cr steel.

[0038] The micro-indentation dental plate is prepared through the following steps:

[0039] (1) Spray or brush a layer of adhesive on the surface of the tooth plate. The adhesive is oily pressure-sensitive adhesive, which is mixed with acetone at a volume ratio of 1:2.5.

[0040] (2) Sprinkle cemented carbide particles, the cemented carbide particles are evenly distributed, and the average spacing of the distri...

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Abstract

The invention discloses a micro-indentation tooth plate and a preparation method thereof. The micro-indentation tooth plate structurally comprises a tooth plate base body and a hard alloy coating; andthe hard alloy coating is welded on the surface of the base body through brazing. The hard alloy coating is composed of hard alloy particles and brazing solder, the middles and the bottoms of the hard alloy particles are embedded in the brazing solder, and the tops of the hard alloy particles are exposed; and the heights of the outer surfaces of the hard alloy particles are equal, and the error does not exceed + / -0.2 mm. The hard alloy surface of the micro-indentation tooth plate is clean, free of solder coating, good in sharpness, good in tooth plate equal-height performance, small in holding force stress on an oil casing pipe, and consistent and fine in indentation; and the damage to the surface of the pipe is smaller after screwing and unscrewing, cost can be saved, investment is reduced, and economic benefits are remarkable.

Description

technical field [0001] The invention belongs to the technical field of mechanical design and manufacture, and in particular relates to a micro-indentation pressure plate, which is used for clamping pipe strings in oil and gas drilling and workover operations. Background technique [0002] The casing tong is a safe, environmentally friendly, economical and efficient wellhead casing making and breaking tool. The casing tong uses the jaw plate to install the tooth plate to bite the casing to perform the making and breaking operation. [0003] Tooth plates are mainly used in: hanging tongs, slips, chucks, elevators, power tongs, safety slips, etc., and non-excavation equipment. [0004] Most of the existing tooth plates are tooth-shaped grooves on the surface of the steel substrate, and heat treatment is performed to increase the hardness. During use, there will be excessive extrusion and friction on the oil casing, which will cause scars on the surface of the oil casing. Under ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B13/50
CPCB25B13/5025
Inventor 王波蔡建东林宗良郭坤丁潇杰蔡昌鹏
Owner 江苏韦尔博新材料科技有限公司
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