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Preparation method of titanium-steel composite plate thin strip

A composite plate and thin strip technology, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of micro-cracks and oxide inclusions, incomplete melting of spray powder particles, surface coating pores, etc., to eliminate Coating holes, improved bonding strength, increased bonding effect

Inactive Publication Date: 2011-04-20
沈阳科安捷材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in the production process of thermal spraying, its disadvantages are also very obvious
For example: the surface coating is easy to form pores, microcracks and oxide inclusions, and it is easy to produce incomplete fusion of sprayed powder particles, and the metallurgical bonding strength with the metal substrate surface is less than 100MPa

Method used

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  • Preparation method of titanium-steel composite plate thin strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] First, uncoil the 2mm thick austenitic stainless steel strip, send it into the heating furnace and heat it to 50°C; then enter the spraying section continuously, and spray pure titanium powder on the upper and lower surfaces of the stainless steel strip to form Nistenitic stainless steel as the matrix, two layers of 0.01mm thick pure titanium clad stainless steel-pure titanium composite plate thin strip; cooled to room temperature in the air; then the sprayed plate thin enters the online rapid heating device HOP (Heat-treatment Online Process), the clad sheet is heated for 4s to 200°C, and then enters the finishing mill, the total rolling reduction rate is 50%, and the clad sheet is rolled into a composite sheet with a total thickness of 1.01mm at a rolling speed of 1m / s. Plate and thin strip, wherein the middle layer of stainless steel is 1mm thick, and the upper and lower layers of pure titanium are 0.005mm thick. Finally, the thin strip of the clad plate is coiled to...

Embodiment 2

[0016] Firstly, the 3mm thick austenitic stainless steel strip is uncoiled and sent into the heating furnace to be heated to 220°C; then it enters the spraying section continuously, and the upper and lower surfaces of the stainless steel strip are thermally sprayed with pure titanium powder to form an austenitic stainless steel strip. Nistenitic stainless steel as the substrate, two layers of 0.1mm thick pure titanium-coated stainless steel-pure titanium composite plate thin strip; cooled to room temperature in the air; then the sprayed plate thin enters the online rapid heating device HOP (Heat-treatment Online Prcess), heat the clad sheet for 4s to 750°C, then enter the finishing mill, the total rolling reduction rate is 50%, and roll the clad sheet at a rolling speed of 2m / s to form a composite sheet with a total thickness of 1.6mm. Plate and thin strip, wherein the middle layer of stainless steel is 1.5mm thick, and the upper and lower layers of pure titanium are 0.05mm thi...

Embodiment 3

[0018] Firstly, the 4mm thick austenitic stainless steel strip is uncoiled and sent into the heating furnace to be heated to 700°C; then it enters the spraying section continuously, and the upper and lower surfaces of the stainless steel strip are thermally sprayed with pure titanium powder to form an austenitic stainless steel strip. 2mm thick stainless steel-pure titanium clad strip; cooled to room temperature in the air; then the sprayed plate enters the online rapid heating device HOP (Heat-treatment Online Process ), heat the clad sheet for 4s to 1000°C, and then enter the finishing mill with a total rolling reduction of 50%, and roll the clad sheet at a rolling speed of 0.3m / s to make a clad sheet with a total thickness of 4mm A thin strip, wherein the middle layer of stainless steel is 2mm thick, and the upper and lower layers of pure titanium are 1mm thick. Finally, the thin strip of the clad plate is coiled to obtain a thin strip of titanium-steel clad plate with an i...

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Abstract

The invention relates to the technical field of metallurgy, in particular to a preparation method of a titanium-steel composite plate thin strip, which is characterized by comprising the following steps of: firstly, uncoiling a cold rolled metal strip by using an uncoiling machine; secondly, sending the uncoiled strip to a heating furnace to be preheated; thirdly, thermally spraying the preheated strip, cooling to room temperature in air; fourthly, sending the cooled titanium-steel composite plate thin strip to an on-line heating device to ensure that the temperature of the sprayed titanium-steel composite plate thin strip raises to 200-1,000 DEG C at a temperature gradient of 30-300 DEG C / s; and fifthly, enabling the heated titanium-steel composite plate thin strip to enter a finishing mill at a speed of 0.3-2m / s to be rolled, wherein the primary down rate is more than 5 percent, the total down rate is more than 30 percent, the interface bond strength of the obtained titanium-steel composite plate thin strip is more than 300MPa and the surface roughness is less than 0.01mm.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for preparing a thin strip of a titanium-steel composite plate. Background technique [0002] Titanium-steel strips are obtained by compounding one metal as the base material and another metal as the cladding material through certain means. Titanium-steel composite strip has the characteristics of two metals, that is, the strong corrosion resistance of titanium and the low cost of steel, so titanium-steel strip has a very wide range of applications in petrochemical, thermal power generation, boiler heating, etc. . There are two main methods for traditional production of titanium-steel strips: one is the explosive cladding method, which first obtains a relatively thick titanium-steel clad plate through explosive cladding, and then finally rolls it into a titanium-steel clad plate by rolling. thin ribbon. However, this method is relatively polluting to the environmen...

Claims

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Application Information

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IPC IPC(8): B21B3/00B21B37/00
Inventor 谢广明骆宗安王光磊王国栋厉梁
Owner 沈阳科安捷材料技术有限公司
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