Production device and production method of titanium welded pipe for electric heater

A technology for electric heaters and production equipment, applied in arc welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as difficulty in pipe insertion, long manufacturing cycle, and desoldering, and achieve simple overall structure, ensure product quality, The effect of controlling production costs

Inactive Publication Date: 2017-09-22
江苏圣珀新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the titanium tubes used in the field of electric heaters are generally seamless titanium tubes. There are many nitrogen production processes and a long manufacturing cycle, and the produced titanium tubes have problems such as wall thickness and uneven tube diameter, which makes it difficult to wear the tubes. Therefore, at present, it is more desirable to use welded tubes, but because the titanium tubes in the electric heater have smaller diameters but very thin wall thicknesses, it is difficult to weld, and there will be desoldering or virtual welding, which lead to small Technical Difficulties of Pipe Diameter, Thin Wall and Thick Titanium Welded Pipe

Method used

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  • Production device and production method of titanium welded pipe for electric heater

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Embodiment 1

[0051] Raw material TA1 titanium belt, width 29.1, wall thickness 0.5mm, cold-formed by using a tape-winding mechanism with φ9.5 horizontal forming rollers and vertical forming rollers, to prepare straight seam titanium with φ9.5*0.5mm specification welded pipe. After the narrow titanium strip is formed by continuous cold pressing, arc welding is carried out. The welding process parameters used are: welding speed 0.5~1m / min, welding current 110~125A, welding voltage 8.8~9.4V, argon gas flow rate 10 ~25 l / min, the opening of the welding squeeze roller is 1.7mm, and the inclination angle between the welding torch and the workpiece is 40 degrees, so that the weld seam is fully filled and the transition is smooth and smooth. After welding, the eddy current non-destructive flaw detection device is used to detect the quality of the weld seam, and alarms are issued for defects, and alarms are issued at the beginning of the period. After welding, the coffin is subjected to sizing str...

Embodiment 2

[0054] Raw material TA1 titanium strip with a width of 38.9mm and a wall thickness of 0.65mm is used for cold-bending forming with a tape-reel mechanism with a horizontal forming roller and a vertical forming roller with a specification of φ12.7 to prepare straight seam titanium with a specification of φ12.7*0.65mm welded pipe. After the narrow titanium strip is formed by continuous cold pressing, arc welding is carried out. The welding process parameters used are: welding speed 0.5~1m / min, welding current 120~135A, welding voltage 8.8~9.4V, argon gas flow rate 10 ~25 l / min, the opening of the welding squeeze roller is 2.0mm, and the inclination angle between the welding torch and the workpiece is 45 degrees, so that the weld seam is fully filled and the transition is smooth and smooth. After welding, the eddy current non-destructive flaw detection device is used to detect the quality of the weld seam, and alarms are issued for defects, and alarms are issued at the beginning o...

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Abstract

The invention provides a production device and production method of titanium welded pipes for electric heaters. The production device includes: a titanium belt conveying mechanism, which is used to deliver titanium belts to subsequent processing mechanisms; a belt winding mechanism, including multiple groups of horizontal forming rollers and at least one group of vertical forming rollers arranged vertically, the vertical forming rollers are arranged above the horizontal forming rollers, and are located between adjacent two groups of horizontal forming rollers; The titanium strip is welded; the welding extrusion mechanism is used to extrude the rolled titanium strip when the arc welding mechanism is working. Based on the production device, the production invention of the present invention can produce titanium welded pipes with straight seams, small diameters and thin walls with an outer diameter of φ6~φ1mm and a wall thickness of 0.4~1.0mm, so that the quality of the weld seam and surface quality can meet the electrical requirements The requirements for titanium welded pipes for heaters break through the traditional welding process of single-gun welding thin-walled small-diameter unconventional titanium welded pipes, so that titanium welded pipes can gradually replace seamless titanium pipes.

Description

technical field [0001] The invention relates to the technical field of profile processing, in particular to a production device and a production method of a titanium welded pipe for an electric heater. Background technique [0002] The heating tube of the electric heater is made by putting electric heating wire in the metal tube, and then filling it with magnesium oxide powder with good thermal conductivity and insulation, and then shrinking the tube. After heat treatment, it is processed into various types required by users. shape. The heater used as an electric heater must have high strength and good stability, and in a long-term high-temperature water environment, it also needs strong corrosion resistance to meet the needs of the equipment. At present, the more commonly used heating tubes are carbon steel tubes and titanium tubes. , stainless steel tubes, and copper tubes. Among them, titanium tubes are more adopted by the mainstream market due to their advantages such a...

Claims

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Application Information

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IPC IPC(8): B23P15/00B23P23/04B21D5/12B23K9/00
CPCB23P15/00B21D5/12B23K9/0026B23P23/04
Inventor 周卫国
Owner 江苏圣珀新材料科技有限公司
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