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A preparation method of wide-width ultra-thin cold-rolled titanium coil for rolling composite

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 material, 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: 2022-04-12
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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  • A preparation method of wide-width ultra-thin cold-rolled titanium coil for rolling composite
  • A preparation method of wide-width ultra-thin cold-rolled titanium coil for rolling composite
  • A preparation method of wide-width ultra-thin cold-rolled titanium coil for rolling composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: select thickness 190mm, width 1280mm EB furnace die casting slab blank to produce 0.3mm titanium band, its Fe content is 0.024%, C content is 0.010%, N content is 0.0063%, O content is 0.041%, [ O] 当 is 0.076%. The upper and lower surfaces of the ingot are integrally machined with a large integral cutter head milling machine. The diameter of the cutter head is greater than 1280 mm, and the thickness of the single-sided milling is 5 mm. After machining, the thickness difference of the slab cross-section is 2 mm.

[0044] The billet is hot-rolled to 3.0mm thick by a furnace coil rolling mill, and continuously annealed, pickled, and ground; a 20-high rolling mill is used to cold-roll to 0.75mm in one pass, and each side is trimmed to 5mm, using 680°C Semi-finished products are annealed; the second rolling pass is rolled to a thickness of 0.3mm, and the rolling deformation rate is 60%. The rolling parameter table is shown in Table 1; Use a tempering machine ...

Embodiment 2

[0050] Embodiment 2: select thickness 190mm, width 1280mm EB furnace die casting slab blank to produce 0.19mm titanium band, its Fe content is 0.025%, C content is 0.030%, N content is 0.0012%, O content is 0.022%, [ O] 当 It is 0.06%; the upper and lower surfaces of the ingot are integrally machined with a large integral cutter head milling machine, the diameter of the cutter head is greater than 1280 mm, the thickness of single-sided milling is 5 mm, and the difference in thickness of the cross-section of the slab after machining is 2 mm. The steel plate is hot-rolled to 3.5mm thick by using a furnace coil rolling mill, and is subjected to continuous annealing, pickling and grinding; it is cold-rolled to 1.2mm in one pass of a 20-high rolling mill, and the semi-finished product is annealed at 650°C, followed by rolling in the second pass. to 0.5mm, trimming 6mm on both sides, and annealing semi-finished products at 650°C; the third rolling pass is rolled to 0.19mm finished pr...

Embodiment 3

[0057] Embodiment 3: select thickness 200mm, width 1290mm EB furnace die casting slab stock to produce 0.10mm titanium band, its Fe content is 0.016%, C content is 0.010%, N content is 0.0065%, O content is 0.005%, [ O] 当 is 0.0405%. The upper and lower surfaces of the ingot are integrally machined with a large integral cutter head milling machine. The diameter of the cutter head is greater than 1280mm, the thickness of single-sided milling is 8mm, and the thickness difference of the cross-section of the slab after machining is 1mm. The billet is hot-rolled to 3.0mm thick by a furnace coil rolling mill, and continuously annealed, pickled, and ground; a 20-high rolling mill is used to cold-roll to 0.75mm in one pass, annealed at 660°C for semi-finished products, and then rolled in two passes. to 0.17mm, trimming 6mm on both sides, and annealing semi-finished products at 650°C; the third rolling pass is rolled to 0.10mm finished products, and the rolling deformation rate is 41....

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Abstract

The invention relates to a preparation process of wide-width ultra-thin cold-rolled titanium coils for rolling compounding. Through innovation and optimization of component design, slab preparation, cold coil rolling, heat treatment, leveling and correction and other process routes and parameters, EB Slabs are prepared by casting slabs in the furnace, and the surface is processed by a large overall cutter head. The heat treatment of the finished product is carried out by the furnace cooling bell annealing method, and the rolling and smoothing method is selected to further improve the strip shape after annealing. The width of the prepared cold-rolled titanium strip can reach more than 1000mm, the thickness is 0.1~0.3mm, and the strip shape is flat. Straight, excellent comprehensive mechanical properties, high compounding rate with dissimilar metal rolling, and can significantly reduce the cost of composite titanium metal.

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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Patent Type & Authority Patents(China)
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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