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Method for preparing titanium alloy drilling rod with high wear resistance and high hardness

A high wear resistance, drilling rod technology, applied in the direction of using liquid cleaning methods, chemical instruments and methods, cleaning methods and utensils, etc., can solve problems such as the inability to meet the low cost requirements of drilling rods, and save the replacement of drilling rods. time, improve corrosion resistance and simple preparation process

Inactive Publication Date: 2019-05-03
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still unable to meet the requirements of low cost of drill pipe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the present embodiment comprises the following steps:

[0027] Step 1: Shot peening. After removing the dirt visible to the naked eye of the Ti-6Al-4V drill rod, fix the drill rod to a shot blasting room equipped with a rotating frame for rotary shot peening of the drill rod. Turn on the rotating motor first to control the rotation rate of the drilling rod at 1 circle / min. Finally, turn on the shot peening start switch, and control the gas pressure at 0.4MPa, and the shot peening time is 5min. Among them, the projectile is cast steel shot ZG30, the hardness is 55HRC, the diameter is 0.1mm,

[0028] Step 2: Clean up residual projectiles. Ultrasonic vibration cleaning of the drill pipe treated in step one. The cleaning process is as follows: 1) first fix the drilling rod vertically on the fixing frame; 2) put the fixing frame with the drilling rod on the bracket of the ultrasonic vibration tank, and make the drilling rod under the fixing fram...

Embodiment 2

[0033] The preparation method of the present embodiment comprises the following steps:

[0034] Step 1: Shot peening. After removing the dirt visible to the naked eye of the Ti-6Al-4V drill rod, fix the drill rod to a shot blasting room equipped with a rotating frame for rotary shot peening of the drill rod. First turn on the rotating motor to control the rotation rate of the drilling rod at 5 circles / min. Finally, turn on the shot peening start switch, and control the gas pressure at 0.6MPa, and the shot peening time is 45min. Among them, the projectile is cast steel shot ZG30, the hardness is 65HRC, the diameter is 0.5mm,

[0035] Step 2: Clean up residual projectiles. Ultrasonic vibration cleaning of the drill pipe treated in step one. The cleaning process is as follows: 1) first fix the drilling rod vertically on the fixing frame; 2) put the fixing frame with the drilling rod on the bracket of the ultrasonic vibration tank, and make the drilling rod under the fixing fr...

Embodiment 3

[0040] The preparation method of the present embodiment comprises the following steps:

[0041] Step 1: Shot peening. After removing the dirt visible to the naked eye of the Ti-6Al-4V drill rod, fix the drill rod to a shot blasting room equipped with a rotating frame for rotary shot peening of the drill rod. First turn on the rotating motor to control the rotation rate of the drilling rod at 3 circles / min. Finally, turn on the shot peening start switch, and control the gas pressure at 0.5MPa, and the shot peening time is 15 minutes. Among them, the projectile is cast steel shot ZG30, the hardness is 60HRC, the diameter is 0.3mm,

[0042] Step 2: Clean up residual projectiles. Ultrasonic vibration cleaning of the drill pipe treated in step one. The cleaning process is as follows: 1) first fix the drilling rod vertically on the fixing frame; 2) put the fixing frame with the drilling rod on the bracket of the ultrasonic vibration tank, and make the drilling rod under the fixi...

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Abstract

The invention discloses a method for preparing offshore drilling titanium alloy drilling rod with high wear resistance, high hardness and long service life. The method includes the steps: firstly, a conventional titanium alloy drilling rod is subjected to shot blasting; secondly, residual pellets are cleared; thirdly, the drilling rod is fixed to a carburized frame; and fourthly, the drilling rodis carburized. According to the method for preparing the offshore drilling titanium alloy drilling rod with the high wear resistance, the high hardness and the long service life, shot blasting and carburizing treatment are conducted on the conventional titanium alloy drilling rod, a modified nanometer protective layer with good toughness, high hardness, wear resistance and corrosion resistance isformed on the surface of drilling rod, the service life of the titanium alloy drilling rod is greatly prolonged, the use cost of the drilling rod is lowered, and the application field of the titaniumalloy drilling rod is widened.

Description

technical field [0001] The invention belongs to the technical field of metal processing, and in particular relates to a preparation method of a titanium alloy drilling rod with high wear resistance and high hardness. Background technique [0002] Titanium and its alloys have many excellent properties such as light weight, high strength, strong heat resistance, and good corrosion resistance. They are known as "future metals" and are also the most promising new structural materials. Titanium and its alloys not only have very important applications in aviation and aerospace industries, but also have been widely used in chemical industry, petroleum, light industry, metallurgy, power generation and other fields. [0003] Titanium and its alloys are the materials with the best resistance to seawater corrosion and ocean atmosphere corrosion among all metals. Therefore, titanium and its alloys can be the preferred metal materials for marine engineering applications, and have been wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B3/08B08B3/12B24C1/00
Inventor 张聪惠崔向勇卫娟茹何晓梅
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY