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Steel body pagoda drill bit surface strengthening protection technology

A surface strengthening and drill bit technology, applied in metal material coating process, manufacturing tools, metal processing equipment and other directions, can solve the problems affecting the use efficiency of drill bits, low erosion resistance, poor strength bottom, etc., to achieve high hardness, Increased erosion resistance and enhanced strength

Pending Publication Date: 2021-12-31
镇江市华星特种刀具制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a steel body pagoda drill bit surface strengthening and protection technology, which effectively solves the problem that the existing drill bit surface strengthening layer is not well combined with the machine body, the strength is low, and the erosion resistance is relatively low. Low, it is easy to cause the strengthening layer to peel off from the body, affecting the use efficiency of the drill bit

Method used

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  • Steel body pagoda drill bit surface strengthening protection technology

Examples

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Comparison scheme
Effect test

Embodiment 1

[0044] A process for strengthening and protecting the surface of a steel body pagoda drill bit, comprising the following steps: S1: Material preparation: select tungsten carbide alloy, and melt and cast the tungsten carbide alloy into a thin metal welding wire with a thickness of 3-5mm;

[0045] S2: Cleaning the workpiece: ①: Use a grinder to clean up some oxides, rust and other sundries on the surface of the drill bit, remove burrs, and then use a blowtorch to bake the oil or water stains attached to the surface of the drill bit;

[0046] ②: Put the surface-treated drill bit into the preheating furnace for heating treatment. The preheating temperature is kept at 200°C-500°C, and it is taken out after preheating for 8-10 minutes;

[0047]S3: Surface coating: use surfacing technology to surfacing protective layer on the surface of the drill bit;

[0048] ①: Use the weak carbon flame of the welding torch to heat the front of the drill bit. When it is heated to dark red, when the...

Embodiment 2

[0057] A process for strengthening and protecting the surface of a steel body pagoda drill bit, comprising the following steps: S1: Material preparation: select tungsten carbide alloy, and melt and cast the tungsten carbide alloy into a thin metal welding wire with a thickness of 3-5mm;

[0058] S2: Cleaning the workpiece: ①: Use a grinder to clean up some oxides, rust and other sundries on the surface of the drill bit, remove burrs, and then use a blowtorch to bake the oil or water stains attached to the surface of the drill bit;

[0059] ②: Put the surface-treated drill bit into the preheating furnace for heating treatment. The preheating temperature is kept at 200°C-500°C, and it is taken out after preheating for 8-10 minutes;

[0060] S3: Surface coating: use surfacing technology to surfacing protective layer on the surface of the drill bit;

[0061] ①: Use the weak carbon flame of the welding torch to heat the front of the drill bit. When it is heated to dark red, when th...

Embodiment 3

[0070] A process for strengthening and protecting the surface of a steel body pagoda drill bit, comprising the following steps: S1: Material preparation: select tungsten carbide alloy, and melt and cast the tungsten carbide alloy into a thin metal welding wire with a thickness of 3-5mm;

[0071] S2: Cleaning the workpiece: ①: Use a grinder to clean up some oxides, rust and other sundries on the surface of the drill bit, remove burrs, and then use a blowtorch to bake the oil or water stains attached to the surface of the drill bit;

[0072] ②: Put the surface-treated drill bit into the preheating furnace for heating treatment. The preheating temperature is kept at 200°C-500°C, and it is taken out after preheating for 8-10 minutes;

[0073] S3: Surface coating: use surfacing technology to surfacing protective layer on the surface of the drill bit;

[0074] ①: Use the weak carbon flame of the welding torch to heat the front of the drill bit. When it is heated to dark red, when th...

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Abstract

The invention relates to the technical field of drill bit surface machining, and discloses a steel body pagoda drill bit surface strengthening protection technology. The steel body pagoda drill bit surface strengthening protection technology comprises the following steps that S1, material preparing; S2, workpiece cleaning; S3, surface coating; S4, heat preservation treatment; S5, strength testing; S6, cleaning; S7, inspection; and S8, packaging and warehousing. A strengthened layer on the surface of the drill bit using a surfacing method process is high in hardness and high in strength of combination with a machine body, the strength of the strengthened layer on the surface of the drill bit is enhanced, the erosion resistance of the surface of the drill bit is improved, and the surface of the drill bit is effectively protected; tungsten carbide is used as a raw material to conduct surfacing on the surface of the drill bit, the tungsten carbide is composed of WC and W2C and has very high hardness, strength and melting point, the chemical property of the tungsten carbide is stable, the abrasion resistance of the tungsten carbide is the best, and the quality of the strengthened layer on the surface of the drill bit is further improved; and the operation technology is simple and convenient, the adopted equipment is simple, and the production cost is low.

Description

technical field [0001] The invention belongs to the technical field of drill bit surface processing, and in particular relates to a steel body pagoda drill bit surface strengthening and protection process. Background technique [0002] Step drill, also known as step drill or pagoda drill, is mainly used for drilling thin steel plates within 3mm. One drill bit can replace multiple drill bits. Holes with different diameters can be processed according to needs, and large holes can be processed at one time. There is no need to replace drill bits and drill positioning holes, etc. [0003] The existing reinforced layer on the surface of the drill bit is not well bonded to the machine body and has low strength and low erosion resistance, which may easily cause the reinforced layer to peel off from the machine body and affect the use efficiency of the drill bit; therefore, in view of the current situation, it is now necessary to improve it . Contents of the invention [0004] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C26/02C22C29/08B23K9/04B23K9/235
CPCC23C26/02C22C29/08B23K9/044B23K9/235
Inventor 王爱华岳八金史亚军潘国明
Owner 镇江市华星特种刀具制造有限公司