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Cooling method for titanium alloy oil pipe joint machining procedure

A technology of titanium alloy tubing and processing procedures, applied in the direction of metal processing equipment, metal processing machinery parts, manufacturing tools, etc., can solve the problems of difficult dilution, unsatisfactory, easy to smell, etc., to improve processing quality, prolong service life, wear and tear Reduced effect

Inactive Publication Date: 2015-01-28
PANGANG GROUP CHENGDU STEEL & VANADIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings of the traditional soap-based emulsion, which is easy to smell in summer, difficult to dilute in winter, and has poor anti-rust effect, and has no adverse effect on lathe paint. It is suitable for cutting and grinding of ferrous metals and is currently the most advanced grinding product.
The indicators of cutting fluid are better than saponified oil. It has good cooling, cleaning, anti-rust and other characteristics, and has the characteristics of non-toxic, tasteless, no corrosion to human body, no corrosion to equipment, no pollution to the environment, etc.) Cooling The temperature is generally within the room temperature range, and the effect of cutting and cooling the titanium alloy oil pipe is not ideal, which seriously affects the surface quality of the titanium alloy oil pipe joint and the service life of the tool

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A cooling method used in the processing procedure of a titanium alloy oil pipe joint, characterized in that the method comprises:

[0021] A. Convert the liquid nitrogen in the liquid nitrogen tank into cooled nitrogen through a heat exchanger;

[0022] B. Make the cooled nitrogen flow through the cooling through hole arranged on the threading cutter bar and the cooling through hole arranged on the threading cutter head respectively;

[0023] C. Control the temperature range of cooling nitrogen to -60°C, and then spray it directly onto the cutting area and the threading tool on the surface of the titanium alloy oil pipe joint;

[0024] D. Carry out wire processing on titanium alloy tubing joints.

[0025] The consumption of liquid nitrogen uninterrupted cooling is 0.4-0.5L / min; the injection temperature of nitrogen is -60°C to cool the gas; one piece of wire cutting tool can process 10 titanium alloy oil pipe joints, and the qualified rate reaches 90%.

Embodiment 2

[0027] A cooling method used in the processing procedure of a titanium alloy oil pipe joint, characterized in that the method comprises:

[0028] A. Convert the liquid nitrogen in the liquid nitrogen tank into cooled nitrogen through a heat exchanger;

[0029] B. Make the cooled nitrogen flow through the cooling through hole arranged on the threading cutter bar and the cooling through hole arranged on the threading cutter head respectively;

[0030] C. Control the temperature range of cooling nitrogen to -30°C, and then spray it directly onto the cutting area and the threading tool on the surface of the titanium alloy oil pipe joint;

[0031] D. Carry out wire processing on titanium alloy tubing joints.

[0032] The consumption of liquid nitrogen uninterrupted cooling is 0.2-0.3L / min; the injection temperature of nitrogen is -30°C to cool the gas; one piece of wire cutting tool can process 6 titanium alloy oil pipe joints, and the qualified rate reaches 80%.

Embodiment 3

[0034] A cooling method used in the processing procedure of a titanium alloy oil pipe joint, characterized in that the method comprises:

[0035] A. Convert the liquid nitrogen in the liquid nitrogen tank into cooled nitrogen through a heat exchanger;

[0036] B. Make the cooled nitrogen flow through the cooling through hole arranged on the threading cutter bar and the cooling through hole arranged on the threading cutter head respectively;

[0037] C. Control the temperature range of cooling nitrogen to -50°C, and then spray it directly onto the cutting area and the threading tool on the surface of the titanium alloy oil pipe joint;

[0038] D. Carry out wire processing on titanium alloy tubing joints.

[0039] The consumption of liquid nitrogen uninterrupted cooling is 0.5-0.6L / min; the injection temperature of nitrogen is -50°C to cool the gas; one piece of threading tool can process 6 titanium alloy oil pipe joints, and the qualified rate reaches 85%.

[0040] Qualificat...

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PUM

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Abstract

The invention discloses a cooling method for a titanium alloy oil pipe joint machining procedure. The method comprises the following steps of A, converting liquid nitrogen in a liquid nitrogen tank into cooling nitrogen by virtue of a heat exchanger; B, causing the cooling nitrogen to flow through a cooling through hole of a threading toolbar and a cooling through hole in a threading tool bit respectively; C, controlling the temperature range of the cooling nitrogen to be -60 to -30 DEG C, and directly spraying the cooling nitrogen onto a cutting area on the surface of a titanium alloy oil pipe joint and a threading tool; D, threading the titanium oil pipe joint. The method has the beneficial effects that when a conventional cutting fluid cooling manner is adopted, machining temperature can only be controlled to be room temperature, and is still high, so that the abrasion of the threading tool is accelerated, and the machining quality of the surface of the titanium alloy oil pipe joint is lowered; with the adoption of the method, the temperature is controlled to be very low by nitrogen, so that the abrasion of the threading tool is remarkably reduced, the service life of the threading tool is prolonged, and the machining quality of the surface of the titanium alloy oil pipe joint is improved.

Description

technical field [0001] The invention relates to the technical field of processing titanium alloy oil pipe joints, in particular to a cooling method used in the processing procedure of titanium alloy oil pipe joints. Background technique [0002] In the process of drilling and mining in the oil and gas industry, the oil pipe is the only passage for oil and gas resources from underground to the surface. The oil pipe connects the pipes one by one through the joint thread to form a pipe string of several thousand meters. The processing of the oil pipe joint, It belongs to relatively precise mechanical processing, but its specificity is strong. In cutting processing, sufficient cooling is an indispensable link. [0003] In the threading of carbon steel joints, cutting fluid is generally used, which can take away the heat of the blade and wash away the chips to reduce the cutting force. Effective cooling can increase productivity and improve the surface quality of the processed oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q11/10
CPCB23Q11/10
Inventor 赵中清成海涛晏如边华川宋令玺李波黄英滕建明
Owner PANGANG GROUP CHENGDU STEEL & VANADIUM