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Preparation process method of wide ultrathin cold-rolled titanium strip coil for rolling bonding

A technology of rolling composite and preparation process, applied in metal rolling and other directions, can solve the problems of large thickness and specific gravity of composite titanium metal, limited wide-scale promotion and application, and high production cost of composite materials, so as to reduce the risk of strip breakage and solve the problem of Problems in the shape control industry and the effect of eliminating stress on cutting edges

Active Publication Date: 2020-12-25
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the width of titanium strip below 0.3mm in China is generally ≤600mm; at the same time, the thinner the titanium strip, the greater the thickness difference between it and the dissimilar metal during rolling and compounding, the worse the deformation coordination of the two materials, and serious quality problems such as cracking and low compounding rate The more prominent, so the thickness of titanium strips for rolling composites is generally ≥0.5mm
[0004] The thickness and specific gravity of composite titanium metal are relatively large, resulting in high production costs of composite materials, which to some extent limits its further wide-scale application

Method used

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  • Preparation process method of wide ultrathin cold-rolled titanium strip coil for rolling bonding
  • Preparation process method of wide ultrathin cold-rolled titanium strip coil for rolling bonding
  • Preparation process method of wide ultrathin cold-rolled titanium strip coil for rolling bonding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: The EB furnace die-casting slab billet with a thickness of 190 mm and a width of 1280 mm was used to produce a 0.3 mm titanium strip, and the Fe content was 0.024%, the C content was 0.010%, the N content was 0.0063%, and the O content was 0.041%, [ O] 当 is 0.076%. The upper and lower surfaces of the ingot are machined as a whole using a large-scale integral cutter head milling machine. The cutter head diameter is greater than 1280mm, the thickness of single-sided milling is 5mm, and the thickness difference of the slab cross-section after machining is 2mm.

[0044] The slabs are hot rolled to 3.0mm thickness by furnace coiling mill, and subjected to continuous annealing, pickling and grinding; cold rolling to 0.75mm by one pass of 20-high rolling mill, 5mm trimming on each side, using 680℃ Semi-finished product annealing; the second rolling process is rolled to a thickness of 0.3mm, the rolling process deformation rate is 60%, and the rolling parameter tabl...

Embodiment 2

[0050] Example 2: The EB furnace die-cast slab ingot with a thickness of 190 mm and a width of 1280 mm is used to produce a 0.19 mm titanium strip, and the Fe content is 0.025%, the C content is 0.030%, the N content is 0.0012%, and the O content is 0.022%, [ O] 当 It is 0.06%; the upper and lower surfaces of the ingot are machined as a whole using a large overall cutter head milling machine, the cutter head diameter is greater than 1280mm, the thickness of single-sided milling is 5mm, and the thickness difference of the slab cross-section after machining is 2mm. The slabs are hot rolled to 3.5mm thick with a furnace coil mill, and subjected to continuous annealing, pickling and grinding; a twenty-high rolling mill is used for one pass of cold rolling to 1.2mm, and the semi-finished products are annealed at 650°C, followed by two passes of rolling. To 0.5mm, trim 6mm on both sides, and anneal the semi-finished product at 650 °C; the third rolling process is rolled to 0.19mm fin...

Embodiment 3

[0057] Example 3: The EB furnace die-casting slab billet with a thickness of 200 mm and a width of 1290 mm is used to produce a 0.10 mm titanium strip, and the Fe content is 0.016%, the C content is 0.010%, the N content is 0.0065%, and the O content is 0.005%, [ O] 当 is 0.0405%. The upper and lower surfaces of the ingot are machined integrally with a large-scale integral cutter head milling machine. The cutter head diameter is greater than 1280mm, the single-sided milling thickness is 8mm, and the thickness difference of the slab cross-section after machining is 1mm. The slabs are hot rolled to 3.0mm thickness with a furnace coiling mill, and subjected to continuous annealing, pickling and grinding; cold rolling to 0.75mm in one pass using a twenty-high mill, annealing of semi-finished products at 660°C, and then rolling in two passes. to 0.17mm, trimming 6mm on both sides, and annealing the semi-finished product at 650°C; rolling to 0.10mm finished product in the third roll...

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Abstract

The invention relates to a preparation process method of a a wide ultrathin cold-rolled titanium strip coil for rolling bonding. The preparation process method comprises that a plate blank is preparedby adopting an EB furnace die casting slab ingot through process routes and parameters such as innovation, component design optimization, plate blank preparation, cold coiling rolling, heat treatment, leveling and shape correction and the like, the surface is machined by using a large integral cutterhead, a treatment method of first performing edge cutting and then performing annealing is adoptedafter cold rolling of a mother strip, a small-tension rolling control manner is adopted in the finished product rolling stage, finished product heat treatment is carried out in a long-time heat preservation and furnace cooling cover type annealing manner, and a rolling leveling method is selected to further improve the strip shape of the annealed strip coil; the width of the prepared cold-rolledtitanium strip coil can reach 1000 mm or above, the thickness can reach 0.1-0.3 mm, the strip shape is flat and straight, the comprehensive mechanical property is excellent, the rolling bonding rate with dissimilar metal is high, and meanwhile, the cost of the composite material titanium metal can be remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of titanium material processing, in particular to a method for preparing a wide-width ultra-thin cold-rolled titanium coil for compound rolling. Background technique [0002] Titanium rolled composite material is composed of titanium metal and dissimilar metals. Dissimilar metals include aluminum, stainless steel, copper, etc. It has the advantages of corrosion resistance and antibacterial of titanium materials, and at the same time can greatly reduce costs and improve thermal conductivity. It is widely used in fields such as hydrometallurgy, electric power chemical industry, titanium cooker and daily necessities. [0003] Due to the characteristics of high specific strength, high deformation resistance and resilience, poor thermal conductivity, and easy bonding of titanium metal, it is difficult to prepare ultra-thin wide strips with a thickness of less than 0.3mm, and it is easy to appear inclusions, holes...

Claims

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Application Information

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IPC IPC(8): B21C37/02B21B1/22C22B9/22C22B34/12C22F1/18C22F1/02
CPCB21C37/02B21B1/22C22B9/228C22B34/1295C22F1/183C22F1/02B21B2001/225
Inventor 李渤渤陶会发宋宇刘茵琪
Owner LUOYANG SUNRUI TI PRECISION CASTING
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