CN104001719A - Manufacturing method of titanium rolled composite plate - Google Patents

Abstract

The invention provides a manufacturing method of a titanium rolled composite plate and belongs to the material processing field. The method is characterized in that a titanium plate-steel plate combined blank manufactured by use of a common method is heated at two stages: firstly, the titanium plate-steel plate combined blank is put in a heating furnace and heated to the range of 500-700 DEG C; after heat preservation of 50-90 minutes, the titanium plate-steel plate combined blank is further heated to the range of 800-1000 DEG C, and then heat is preserved for 10-20 minutes so that the temperature of the internal titanium layer is lower than that of the external steel layer. The heating at the first stage is carried out at a low temperature and thus capable of reducing the degree of element diffusion between the titanium plate and the steel plate, while the heating at the second stage is carried out at a higher temperature and thus advantageous for hot rolling. In addition, the short-time high-temperature heating at the second stage aims at enabling the temperature of the internal titanium layer is lower than that of the external steel layer. Due to the adoption of the manufacturing method, element diffusion between the steel plate and the titanium plate can be retarded and the degree of an interfacial reaction can be reduced, and therefore, the titanium composite plate with higher bonding strength can be manufactured.

Description

A kind of manufacture method of titanium rolling composite plate

Technical field

The invention belongs to material processing field, particularly the application of stratiform rolling composite plate.

Background technology

The new material that clad steel plate is normally composited with the form of stratiform combination by two or more metal.The general mild steel cheap, processing characteristics is good, the low-alloy steel etc. of adopting are as substrate, select corrosion resistance, heat resistance, wearability good, or the material with certain property, if stainless steel, copper and copper alloy, titanium or titanium alloy etc. are as compound plate.Industry clad steel plate is to be conceived to improve material environment characteristic and the laminar composite that develops.At present, the main flow of clad steel plate development is stainless steel clad plate, copper alloy composite plate and titanium alloy composite panel, and wherein stainless steel clad plate accounts for the more than 90% of clad steel plate output.But stainless steel clad plate only accounts for below 1～2% of hot-rolled stainless output of steel, one of its reason is that the economic effect of stainless steel clad plate is also not obvious.Comparatively speaking, titanium alloy composite panel belongs to high value added product, titanium alloy composite panel is the new material that integrates the decay resistance of excellent intensity, heat transfer property and welding performance that ferrous materials has and titanium alloy, and its application constantly expands at present.

The methods such as rolling is compound, compound, the built-up welding of exploding that are prepared with of clad steel plate.Wherein, the development along with rolling technique, rolling equipment, adopts milling method to prepare the attention that industrial clad steel plate causes people gradually, and has obtained development rapidly.

For titanium steel composite board, because the chemism of titanium is very high, easily produce intermetallic compound, make clad steel plate shearing bond strength produce larger fluctuation.When the intermetallic compounds layer of combination interface generation surpasses certain value, can make composite plate bond strength significantly reduce, in order to improve interface bond strength, the Elements Diffusion of composite plate interface after inhibition rolling, it is a kind of effective method that tissue stops the generation of interface intermetallic compound.Therefore, the diffusion of controlling composite plate combination interface element is the key technology of manufacturing high-quality rolling composite plate, at present, not yet has and can play the effective ways of avoiding fragility to separate out mutually problem.

Summary of the invention

The manufacture method that the object of this invention is to provide a kind of titanium rolling composite plate, solves because interface element diffusion generates the problem that fragility precipitated phase causes composite plate interface bond strength significantly to reduce.

A manufacture method for titanium rolling composite plate, concrete technology step is:

(1) preparation of rolling composite plate

Rolling composite plate adopts common preparation method to obtain, and chooses two blocks of titanium plates and two block plates, and these sheet materials are cut into and have certain length and width; Selected titanium plate thickness is greater than 2mm; Steel plate thickness is greater than 5mm, adopts common surface treatment method to polish to the surface of titanium plate and steel plate;

(2) soldering and sealing of sheet material

Adopt usual way to assemble, two blocks of titanium plates are stacked together, middle coating is solder flux only, then two block plates is placed on to the outside of titanium plate, forms four layers of composite plate structure of titanium steel-steel titanium, then adopts usual way to vacuumize and processes and welding assembly;

(3) heating and insulating process

Four layers of composite board that assemble heat in two stages, first put it in heating furnace, are heated to 500～700 ℃, after insulation 50～90min, then are heated to 800～1000 ℃, and insulation 10～20min, makes the temperature of inner titanium layer lower than the temperature of outer steel;

(4) rolling of composite plate

The composite plate of taking out after insulation is carried out pair rolling, guarantees that the first reduction in pass surpasses 55%.

(5) the cutting out of composite plate (cutting)

The titanium composite plate of having rolled is cut with water bed, the position of soldering and sealing is cut, unnecessary welding material cuts, and becomes two independently titanium-steel composite boards, and composite plate is cut into needed size.

Feature of the present invention is, substrate is encapsulated in compound plate interior and the insulating process of composite plate is divided into two stages with the form of jacket, while being incubated at low temperatures, can reduce the diffusion of interface element, suppress separating out of fragility phase, the shorter time of at high temperature insulation, outer field steel plate is reached a high temperature, the carrying out that is conducive to rolling, and the titanium plate of internal layer is still low temperature, like this, both can be conducive to processing, alleviate again interfacial reaction, be conducive to improve the interface bond strength of composite plate.

Accompanying drawing explanation

Fig. 1 is a kind of manufacturing approach craft flow process of titanium rolling composite plate.

The specific embodiment

The manufacture method that the invention provides a kind of titanium rolling composite plate, the specific embodiment is as follows:

Embodiment

1, the manufacture of TA1-Q235 rolling composite plate

TA1 and Q235 sheet material adopt common preparation method to obtain, and TA1 sheet metal thickness is 5mm, and Q235 steel plate thickness is 20mm, cut each 2 of the TA1 of same size and Q235 sheet materials, and length is 1000mm, and width is 500mm.After TA1 and Q235 sheet material being polished with abrasive band, by coating in the middle of two blocks of TA1 plates only solder flux be stacked together, the outside that Q235 steel plate is placed on TA1 plate is carried out soldering group and is dressed up Q235-TA1-TA1-Q235 four-sheet structure.The composite plate that soldering and sealing is good is put into heat-treatment furnace, first at 600 ℃ of insulation 60min, then be heated to after 850 ℃ of insulation 15min, take out and be directly rolled, a time drafts is 60%.

2, the manufacture of TA2-Q235 rolling composite plate

TA2 and Q235 sheet material adopt common preparation method to obtain, and TA2 sheet metal thickness is 5mm, and Q235 steel plate thickness is 15mm, cut each 2 of the TA2 of same size and Q235 sheet materials, and length is 1500mm, and width is 1000mm.After TA2 and Q235 sheet material being polished with abrasive band, by coating in the middle of two blocks of TA2 plates only solder flux be stacked together, the outside that Q235 steel plate is placed on TA2 plate is carried out soldering group and is dressed up Q235-TA2-TA2-Q235 four-sheet structure.The composite plate that soldering and sealing is good is put into heat-treatment furnace, first at 500 ℃ of insulation 60min, then be heated to after 850 ℃ of insulation 15min, take out and be directly rolled, a time drafts is 63%.

3, the manufacture of TA1-304 rolled stainless steel composite plate

TA1 and 304 stainless steel materials adopt common preparation method to obtain, and TA1 sheet metal thickness is 5mm, and 304 corrosion resistant plate thickness are 15mm, cut each 2 of the TA1 of same size and 304 stainless steel materials, and length is 1500mm, and width is 1000mm.After TA1 and 304 stainless steel materials being polished with abrasive band, by coating in the middle of two blocks of TA1 plates only solder flux be stacked together, the outside that 304 corrosion resistant plates are placed on TA1 plate is carried out soldering group and is dressed up 304 stainless steels-TA1-TA1-304 stainless steel four-sheet structure.The composite plate that soldering and sealing is good is put into heat-treatment furnace, first at 700 ℃ of insulation 70min, then be heated to after 900 ℃ of insulation 15min, take out and be directly rolled, a time drafts is 58%.

Claims (1)

1. a manufacture method for titanium rolling composite plate, is characterized in that concrete technology step is:

(1) preparation of rolling composite plate:

Rolling composite plate adopts common preparation method to obtain, and chooses two blocks of titanium plates and two block plates, and these sheet materials are cut into and have certain length and width; Selected titanium plate thickness is greater than 2mm; Steel plate thickness is greater than 5mm, adopts common surface treatment method to polish to the surface of titanium plate and steel plate;

(2) soldering and sealing of sheet material:

Adopt usual way to assemble, two blocks of titanium plates are stacked together, middle coating is solder flux only, then two block plates is placed on to the outside of titanium plate, forms four layers of composite plate structure of titanium steel-steel titanium, then adopts usual way to vacuumize and processes and welding assembly;

(3) heating and insulating process:

Four layers of composite board that assemble heat in two stages, first put it in heating furnace, are heated to 500～700 ℃, after insulation 50～90min, then are heated to 800～1000 ℃, and insulation 10～20min, makes the temperature of inner titanium layer lower than the temperature of outer steel;

(4) rolling of composite plate:

The composite plate of taking out after insulation is carried out pair rolling, guarantees that the first reduction in pass surpasses 55%.