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Preparation method of ultra-thick titanium/steel composite tube plate with large area and high properties

A high-performance, composite pipe technology, applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of large format, thick cladding, and difficulty in implementing tailor-made welding processes, and achieve the effects of cost saving and excellent strength

Inactive Publication Date: 2011-05-11
XIAN TIANLI CLAD METAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the conventional titanium / steel composite tubesheet (thickness of the cladding layer is 5mm-8mm, thickness of the base layer is 10mm-100mm), there are still the following difficulties in the preparation of large-area and high-performance ultra-thick titanium / steel composite tubesheet: ① the cladding layer is thicker, It makes it difficult to implement the tailor welding process; ② Large-area composite tube sheets require large-sized and ultra-thick steel plates. Due to the limitations of the current steel plate preparation technology, large-sized and ultra-thick composite tube sheets cannot be prepared, so the steel plates must be tailor-welded to meet the size requirements; ③The composite layer is thicker and the format is larger, which increases the difficulty of implementing the explosive composite process

Method used

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  • Preparation method of ultra-thick titanium/steel composite tube plate with large area and high properties
  • Preparation method of ultra-thick titanium/steel composite tube plate with large area and high properties
  • Preparation method of ultra-thick titanium/steel composite tube plate with large area and high properties

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Step 1, adopting the method of TIG welding to carry out tailor-welding treatment to a plurality of titanium plates with a thickness of 8 mm to prepare a multi-layer titanium plate 1 with a weld seam-3 having a width of 340 mm and a length of 1120 mm;

[0030] Step 2, adopting the method of automatic submerged arc welding to carry out tailor welding process on a plurality of steel plates with a thickness of 200 mm to prepare a base steel plate 2 with a weld seam 2 4 with a width of 320 mm and a length of 1100 mm;

[0031] Step 3, leveling the base steel plate 2 to make its unevenness ≤ 6mm / m;

[0032] Step 4: Grinding the bonded surface of the clad titanium plate 1 and the leveled base steel plate 2 to a roughness Ra≤10 μm;

[0033] Step 5: Evenly arrange a plurality of gap materials 7 with a height of 2mm on the polished base steel plate 2, then place the polished multi-layer titanium plate 1 on the gap material 7, and keep the welding seam 3 and the welding seam. Seam...

Embodiment 2

[0038] Step 1, adopting the method of TIG welding to carry out tailor-welding treatment to a plurality of titanium plates with a thickness of 20 mm to prepare a multi-layer titanium plate 1 with a weld seam-3 having a width of 5200 mm and a length of 6700 mm;

[0039] Step 2, adopting the method of automatic submerged arc welding to carry out tailor welding process on a plurality of steel plates with a thickness of 100 mm to prepare a base steel plate 2 with a weld seam 2 4 with a width of 5100 mm and a length of 6600 mm;

[0040] Step 3, leveling the base steel plate 2 to make its unevenness ≤ 6mm / m;

[0041] Step 4: Grinding the bonded surface of the clad titanium plate 1 and the leveled base steel plate 2 to a roughness Ra≤10 μm;

[0042] Step 5: Evenly arrange a plurality of gap materials 7 with a height of 8mm on the polished base steel plate 2, then place the polished multi-layer titanium plate 1 on the gap material 7, and keep the welding seam 3 and the welding seam. S...

Embodiment 3

[0047] Step 1, adopting the method of TIG welding to carry out tailor-welding treatment to a plurality of titanium plates with a thickness of 14 mm to prepare a multi-layer titanium plate 1 with a weld seam-3 having a width of 2800 mm and a length of 3900 mm;

[0048] Step 2, adopting the method of automatic submerged arc welding to carry out tailor welding process on a plurality of steel plates with a thickness of 150 mm to prepare a base steel plate 2 with a weld seam 2 4 with a width of 2740 mm and a length of 3840 mm;

[0049] Step 3, leveling the base steel plate 2 to make its unevenness ≤ 6mm / m;

[0050] Step 4: Grinding the bonded surface of the clad titanium plate 1 and the leveled base steel plate 2 to a roughness Ra≤10 μm;

[0051] Step 5: Evenly arrange a plurality of gap materials 7 with a height of 15 mm on the polished base steel plate 2, then place the polished multi-layer titanium plate 1 on the gap material 7, and keep the welding seam-3 and the welding seam. ...

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Abstract

The invention provides a preparation method of an ultra-thick titanium / steel composite tube plate with large area and high properties, which comprises the following steps: 1. adopting a TIG welding method to prepare a multi-layer titanium plate through split welding; 2. adopting an automatic submerged arc welding method to prepare a base-layer steel plate through the split welding; 3. carrying out the leveling treatment on the base-layer steel plate; 4. polishing the combination surface; 5. assembling the base-layer steel plate and the multi-layer titanium plate; 6. preparing the composite tube plate through explosive welding; and 7. carrying out the annealing heat treatment on the composite tube plate to relieve the stress and obtain the ultra-thick titanium / steel composite tube plate with large area and high properties through mechanical processing. The ultra-thick titanium / steel composite tube plate with large area and high properties prepared by the invention has the excellent strength, heat conducting property and welding property of the steel plate, and simultaneously has the corrosion-resistant property of titanium. The composite tube plate prepared by the invention has the combination rate and properties achieving the standard requirements, can be safely applied to the production and basically solves the limit of the composite tube plate dimension to the standards of large-sized equipment.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a method for preparing a large-area ultra-thick high-performance titanium / steel composite tube sheet. Background technique [0002] Titanium is widely used in industrial fields due to its low density, high strength and excellent corrosion resistance. The use of titanium to prepare pipes can reduce its wall thickness to 0.5mm-0.7mm. Because of its high economy, use effect and reliability, it is gradually applied to chemical equipment, such as tube-and-tube heat exchangers, Pressure vessels, boilers and reactors. The tube sheet matched with the pipe is mainly used to support and fix the tubes. Initially, it was also made of 25mm~35mm pure titanium wide plate. The metal material not only has strong rigidity, but also has great thermal conductivity. However, in the mid-to-late 1980s, titanium condensers were to replace copper alloy condensers in large quanti...

Claims

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Application Information

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IPC IPC(8): B23K31/02
Inventor 赵惠李平仓何小松李莹薛治国李山云王思远王礼营徐鹏高宝利赵勤孝邓启平
Owner XIAN TIANLI CLAD METAL MATERIALS
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