CN1199742C

CN1199742C - Liquid phase rolling method for preparing metal composite material

Info

Publication number: CN1199742C
Application number: CNB021280592A
Authority: CN
Inventors: 左孝青; 史庆南; 孙加林
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2002-12-17
Filing date: 2002-12-17
Publication date: 2005-05-04
Anticipated expiration: 2022-12-17
Also published as: CN1426857A

Abstract

The present invention relates to a metal compound material preparing method through liquid phase rolling. In the technology, a liquid phase rolling method is used for compounding two metals or three metals. The technology comprises the steps that metals needing to be compounded are respectively melted; the metals are poured into a vertical two-roll rolling mill with a cooling device for compound rolling; three guard boards or four guard boards are used in the rolling mill so that bimetallic or trimetallic compound materials can be respectively rolled; compound sections with simple cross sections can be rolled through the use of pass rolls and guard boards with the corresponding shape; materials as finished products are obtained through the treatment of forced cooling and diffusion anneal. During the compound rolling of the materials as finished products, the transitory mutual contact for fusion sintering between pure molten metals results in the avoidance of the oxidation of metal surfaces. The present invention has the characteristics of rapid metal coagulation and semisolid processing, metallurgical bonding interfaces with firm and small tissues can be formed, and energy consumption reduction and scale production are realized.

Description

Liquid phase rolling method for preparing metal composite material

One, technical field: this invention relates to composite between a kind of different metal and preparation method thereof, belongs to the metal-base composites field.

Two, background technology: the composite of metal and metal (as copper-titanium, titanium-steel, steel-aluminum composite plate etc.) is because the compound characteristics of two kinds of different metals, collecting two kinds of metals advantage separately is one, so all have ten minutes to use widely in fields such as chemical industry, metallurgy, building materials, space flight and aviation.

At present, the complex technique of known double metallic composite material based on the strip material mainly contain rolling compound, the solid-liquid of solid-solid phase mutually rolling compound and explode compound etc., but have all that bond strength is not high, energy consumption is high, defective such as complex process, product size are restricted.

The rolling complex technique of liquid phase that the present invention adopts is compound in the metal founding, semi-solid processing obtains on basic, compound tense, because what pure liquid metal was of short duration is in contact with one another clinkering, avoided the metallic surface problem of oxidation, carry out semi-solid rolling when being cooled fast to semisolid under pressure, have the characteristics of metal rapid solidification and semi-solid processing, can form firmly and the metallurgical bonding interface of fine tissue, and capable of reducing energy consumption, realize the clean processing and forming of short flow process.Therefore, the liquid phase composite rolling advantage for preparing metallic composite is: the bond strength that 1) can improve compound interface; 2) can cut down the consumption of energy; 3) can simplify technical process, accomplish scale production.

Three, summary of the invention

1, purpose

Adopt liquid phase rolling method, make high bilayer of bond strength or three-layer metal composite at low cost, comprise the composite wood of composite board band and other simple section shape.Can carry out compoundly between two or three metal not of the same race, what have representative has: 1) bimetallic double layer composite boards such as copper-titanium, titanium-steel, steel-aluminium, aluminium-titanium, steel-stainless steel; 2) titanium-copper-titanium, titanium-steel-titanium, aluminium-steel-aluminium, Solder for Al-Cu Joint Welding-aluminium, stainless steel-steel-bimetallic three-decker composite strips such as stainless steel; 3) three metal three-decker composite strips such as titanium-steel-aluminium, Solder for Al-Cu Joint Welding-steel; 4) the above composite wood that reaches other intermetallic other simple section shape (as circle, ellipse, side, rectangle etc.).

2, technical scheme

(1) technology

Fig. 1 is a process chart of the present invention.Fig. 2 is the rolling mill roll configuration schematic diagram.

Metal that will be compound is heat fused respectively, the milling train that is poured into the band cooling device then carries out composite rolling, milling train uses 3 plate washers, 4 plate washers respectively can rolling bimetallic, three metallic plate composite woods, use concave roll and the respective shapes plate washer can rolling composite material, metal composite material after rolling proceeds to force cooling, cooled metal composite material can batch, carry out diffusion annealing under 0.4 to 0.9 times the temperature of the low-melting-point metal fusing point of back in composite wood, the composite plate after the annealing can further be processed, handle required size and performance.

(2) equipment

1) common metal smelting furnace;

2) special rolling mill;

3) conventional annealing stove.

(3) technical conditions

1) metal charge: two or three different metal, wherein best results has copper and copper alloy, aluminium and aluminium alloy, titanium or titanium alloy, magnesium and magnesium alloy, carbon steel and stainless steel, a noble metal;

2) metal melt temperature: the above 50-300 of melting point metal ℃

3) milling train form: two rollers are vertical;

4) roll-force: 1-100 ton;

5) roller diameter: 50-800mm;

6) roll barrel is long: 20-1600mm;

7) roll intensity of cooling: 1-200 ℃/second;

8) roll the back and force intensity of cooling: 5-200 ℃/second;

9) mill speed: 10-100000mm/ minute;

10) plate washer material: pottery;

11) annealing technology condition: temperature is 0.4-0.95 a times of low-melting-point metal fusing point in the composite wood, and the time is 10-300 minute;

12) composite size: strip material, thickness 2-20mm, width 10-1500mm; The simple section section bar: full-size (wide or high) is not more than 200mm.

Four, description of drawings

Fig. 1 is a process chart of the present invention.Fig. 2 is a third gear plate mill roll configuration schematic diagram of the present invention, and 1 is plate washer among the figure, and 2 is milling train.

Five, the specific embodiment

Embodiment one: 1Cr18Ni9Ti stainless steel-Q235 bimetal copper-steel double layer composite board band

1Cr18Ni9Ti stainless steel and Q235 steel are respectively in 1400 degree and 1500 degree fusings, pour into vertical two-roller mill (300 millimeters of the roller diameters of 3 plate washers, long 800 millimeters of the body of roll), adopt the mill speed of 20 tons of roll-forces and 2 meters/minute, roll and roll the back intensity of cooling be respectively 20 degree/seconds and 50 degree/seconds, can obtain the 1Cr18Ni9Ti stainless steel-Q235 steel double layer composite board band of 600 millimeters of 5 millimeters of thickness (stainless steel and Q235 steel each 2.5 millimeters), width, after this band can adopt conventional stainless steel processing and treating method to carry out subsequent treatment (hot rolling and annealing).

Embodiment two: TC4 titanium alloy-6061 aluminium alloys-TC4 titanium alloy bimetallic three-layer composite board band

TC4 titanium alloy and 6061 aluminium alloys are respectively in 1700 degree and 780 degree fusings, pour into vertical two-roller mill (300 millimeters of the roller diameters of 4 plate washers, long 800 millimeters of the body of roll), adopt the mill speed of 10 tons of roll-forces and 1 meter/minute, roll and roll the back intensity of cooling be respectively 20 degree/seconds and 50 degree/seconds, (middle 6061 aluminium alloys are 3 millimeters can to obtain 5 millimeters of thickness, two outer TC4 titanium alloys respectively are 1 millimeter), TC4 titanium alloy-6061 aluminium alloys that width is 600 millimeters-TC4 titanium alloy bimetallic three-layer composite board band, after this band can carry out subsequent treatment (hot rolling and annealing) with the processing and the treating method of conventional 6061 aluminium alloys.

Embodiment three: MB7 magnesium alloy-H68 copper alloy dual-metal copper-clad magnesium pole

MB7 magnesium alloy and H68 copper alloy are respectively in 700 degree and 1000 degree fusings, pour into 2 plate washer (circles, interior circle waters magnesium alloy, cylindrical waters copper alloy) vertical two roller pass milling train (300 millimeters of roller diameters, long 800 millimeters of the body of roll), adopt the mill speed of 25 tons of roll-forces and 1.5 meters/minute, roll and roll the back intensity of cooling be respectively 30 degree/seconds and 100 degree/seconds, can obtain the MB7 magnesium alloy-H68 copper alloy dual-metal copper-clad magnesium pole of 30 millimeters of external diameters (20 millimeters of middle magnesium alloy diameters), after this bar can carry out subsequent treatment (hot rolling and annealing) with the processing and the treating method of conventional MB7 magnesium alloy.

Claims

1, the rolling method for preparing metallic composite of a kind of liquid phase is characterized in that:

(1) technological process: will melt respectively by compound metal, pour in the band cooling device milling train and carry out composite rolling, the composite wood that rolls out is forced cooling, and cooling back and metal composite material carry out getting the finished product material after the diffusion annealing;

(2) technical conditions:

1) metal charge: two or three different metal;

2) metal melt temperature: the above 50-300 of melting point metal ℃;

3) roll-force: 1-100 ton;

4) roller diameter: 50-800mm;

5) roll barrel is long: 20-1600mm;

6) roll intensity of cooling: 1-200 ℃/second;

7) prick the back and force intensity of cooling: 5-200 ℃/second;

8) mill speed: 10-100000mm/ minute;

9) plate washer material: pottery;

10) annealing technology condition: temperature is 0.4-0.95 a times of low-melting-point metal fusing point in the composite wood;

11) annealing time is 10-300 minute.

2, the method for preparing metallic composite according to claim 1 is characterized in that:

Metal charge is copper and copper alloy, aluminium and aluminium alloy, titanium or titanium alloy, magnesium and magnesium alloy, carbon steel and stainless steel or noble metal.

3, the method for preparing metallic composite according to claim 1 is characterized in that:

Metal charge is 1Cr18Ni9Ti stainless steel, Q235 steel, TC4 titanium alloy, 6061 aluminium alloys, MB7 magnesium alloy or H68 copper alloy.

4, according to claim 1 or the 2 or 3 described methods that prepare metallic composite, it is characterized in that: rolling is with two roller vertical mills.