CN106391705B - A kind of milling method of wide cut fine silver sheet material - Google Patents
A kind of milling method of wide cut fine silver sheet material Download PDFInfo
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- CN106391705B CN106391705B CN201611080722.8A CN201611080722A CN106391705B CN 106391705 B CN106391705 B CN 106391705B CN 201611080722 A CN201611080722 A CN 201611080722A CN 106391705 B CN106391705 B CN 106391705B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
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Abstract
The invention discloses a kind of milling method of wide cut fine silver sheet material, this method is：First, after silver-colored ingot casting removal surface is mingled with gentle hole, it is sent directly into milling train and carries out the first back and forth rolling, obtain the first semi-finished product slab；Described first reciprocal rolling rolls for fixed width；2nd, the tongue type region at the first semi-finished product slab both ends is cut off, is then fed into progress vacuum annealing processing in heat-treatment furnace；3rd, after the first semi-finished product slab is rotated by 90 °, it is sent into milling train and carries out the second back and forth rolling, obtain the second semi-finished product slab；4th, cutting edge processing is carried out to four sides of step the second semi-finished product slab；5th, the second semi-finished product slab is sent into milling train and carries out the 3rd back and forth rolling, the fine silver sheet material that unevenness is not more than 5mm/m is obtained after clipped processing.The inventive method is simple, is easily achieved, and milling method has the advantages that energy consumption is low, the cycle is short, production efficiency is high, and smooth fine silver sheet material is can obtain without being smoothed.
Description
Technical field
The invention belongs to noble metal processing technique field, and in particular to a kind of milling method of wide cut fine silver sheet material.
Background technology
Fine silver has good chemical stability, ductility and thermal conductivity, does not aoxidize at normal temperatures, in hydrochloric acid and " chloroazotic acid "
Middle Surface Creation chlorination Ag films, strengthen its inoxidizability.It is used for electronics industry, chemical engineering industry, medical treatment and special at present
Equipment manufacture industry.Because silver is put into, industrial cost is higher, and the intensity and hardness of fine silver are relatively low, therefore special
It is mostly silver/copper, silver/steel in equipment manufacture industry, based on silver/titanium composite panel material.
At present both at home and abroad by fine silver together with the metal composite of the high intensity such as stainless steel and titanium, pass through fine silver and high intensity
Metal it is compound, that is, make use of the good inoxidizability of fine silver to overcome the low-intensity weakness of fine silver again, further widened pure
The industrial utilization space of silver.This year, State Council instructed industry to adjust structure rush transition synergy opinion clearly to propose to greatly develop high-end electricity
Sub- level polysilicon industry, reduction furnace apparatus is that silver-colored steel composite material produces needed for the sector, the width peace of fine silver plate
Straight degree governs the volume size and service life of such production, while Shaanxi Province also determines that silver-colored steel composite material was 13 phases
Between emphasis advanced composite material, be distinctly claimed and require wider in specification, use and upper require higher surface quality and flatness
Deng so as to reach the metallurgical binding of two kinds of metals in recombination process.Because silver has fabulous plasticity, metal stream in the operation of rolling
Dynamic property is good, is rolled to below 3mm for wide plate, sheet material has local stress, it is easy to sheet material head and the tail warpage, intermediate drum occur
Rise.This kind of defect has had a strong impact on the yield rate of later stage composite board.
Therefore, a kind of milling method that can slow down and control wide cut silver plate material flatness is developed, to improving lumber recovery, is promoted
Enter the industrialization of wide cut silver composite material and application has great importance.
The content of the invention
The technical problems to be solved by the invention are to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of wide cut fine silver plate
The milling method of material.This is not more than 5mm/m using the silver plate material unevenness after milling method rolling.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of milling method of wide cut fine silver sheet material,
Characterized in that, this method comprises the following steps：
Step 1: thickness is 40mm~70mm, width is 300mm~400mm, and length is 450mm~550mm silver-colored ingot casting
After removal surface is mingled with gentle hole, it is sent directly into milling train and carries out the first back and forth rolling, obtain the first semi-finished product slab；Described
One reciprocal rolling rolls for fixed width；
Step 2: the tongue type region at the first semi-finished product slab both ends described in excision step one, is then fed into heat-treatment furnace
Middle progress vacuum annealing processing；
Step 3: after the first semi-finished product slab in step 2 after vacuum annealing is handled is rotated by 90 °, it is sent into milling train
The second back and forth rolling is carried out, obtains the second semi-finished product slab；Described second rolling direction back and forth rolled and the first reciprocal rolling
Rolling direction it is vertical；
Step 4: carrying out cutting edge processing to four sides of the second semi-finished product slab described in step 3, cutting edge amount is
50mm~100mm；
Back and forth rolled Step 5: the second semi-finished product slab in step 4 after cutting edge is handled is sent into milling train and carries out the 3rd
System, the 3rd rolling direction back and forth rolled is identical with the rolling direction that second back and forth rolls, it is ensured that during charging the second half into
The roll of product slab and the milling train integrally bites in line style, finally carries out shear treatment, and it is 1mm~2mm to obtain thickness, width
For 1200mm~1500m, length is 2000~3000mm fine silver sheet material, and the unevenness of the fine silver sheet material is not more than 5mm/m.
A kind of milling method of above-mentioned wide cut fine silver sheet material, it is characterised in that the first half-finished product plate described in step 1
The width of base is wider 250mm~300mm than the width of fine silver sheet material described in step 5.
A kind of milling method of above-mentioned wide cut fine silver sheet material, it is characterised in that the first reciprocal rolling described in step 1
Road number be 5~9 passages, the described first pass deformation rate back and forth rolled is 10%~25%, the described first reciprocal rolling
Total deformation be 75%~85%, the described first rolling speed back and forth rolled is 0.3m/s~0.6m/s；
The milling method of above-mentioned a kind of wide cut fine silver sheet material, it is characterised in that vacuum annealing described in step 2 is handled
Temperature be 400 DEG C~600 DEG C, the time of vacuum annealing processing be 60min~90min, what the vacuum annealing was handled
Vacuum is not less than 0.5Pa.
A kind of milling method of above-mentioned wide cut fine silver sheet material, it is characterised in that the second reciprocal rolling described in step 3
Road number be 5~9 passages, the described second pass deformation rate back and forth rolled is 10%~25%, the described second reciprocal rolling
Total deformation be 70%~85%, the described second rolling speed back and forth rolled is 0.3m/s~0.6m/s；
The milling method of above-mentioned a kind of wide cut fine silver sheet material, it is characterised in that second after cutting edge is handled in step 4
The width of semi-finished product slab is wider 60mm~120mm than the width of fine silver sheet material described in step 5, and the second half after cutting edge processing
Length of the finished product slab after the described in step 5 the 3rd reciprocal rolling than step 5 in the finished product that obtains after shear treatment it is pure
The length length at least 200mm of silver plate material.
A kind of milling method of above-mentioned wide cut fine silver sheet material, it is characterised in that the 3rd reciprocal rolling described in step 5
Road number be 4~7 passages, the 3rd pass deformation rate back and forth rolled is 8%~15%, and the described 3rd back and forth rolls
Total deformation is 40%~50%, and the described 3rd rolling speed back and forth rolled is 0.5m/s~1m/s.
The preparation process of silver-colored ingot casting is described in step 1 of the present invention：First in the condition that temperature is 960 DEG C~1000 DEG C
Under to graphite crucible toast 3h~5h, temperature be 650 DEG C~700 DEG C under conditions of to casting die toast 20min~
60min；Silver ingot is placed in the graphite crucible after toasted processing again, is then placed in vacuum induction melting furnace, in vacuum
Under conditions of 10Pa, the power of vacuum induction melting furnace is risen into 20kW~30kW, after silver ingot is completely melt, is further continued for
The power of Raise vacuum induction melting furnace is then charged with 0.08MPa argon gas refining silvering solution 5min~10min, then add to 50kW
Enter activated carbon, be continuously heating to 1100 DEG C~1150 DEG C of the cast temperature of silvering solution, then into the casting die after toasted processing
Silvering solution is poured into, the silver-colored ingot casting of required size is obtained after cooling；The wall thickness for pouring mould is 30mm~50mm；It is described to pour mold
The material of tool is heat resisting steel；The quality purity of silver ingot is not less than 99.9%；The addition of the activated carbon is the silver ingot quality
0.003%~0.006%；The speed of the casting is 2kg/s~3kg/s.
The present invention has advantages below compared with prior art：
1st, current domestic production fine silver plate width is maintained at below 380mm, and length will prepare plate breadth in 1000mm or so
Degree can only pass through argon arc welding connecting method more than the fine silver plate of 1000mm, length more than 2000mm.Which prepares fine silver slab
When because fuel factor and caused by steel slab surface glacing flatness is poor, welding strength of welding seam is low, due to the long risk that solder skip be present more than weld seam,
The application and use of follow-up sheet material can not be ensured.The Single Ag ingot rolling of the use of present invention rolling fine silver sheet material, can be effective
Ensure fine silver timber intensity, also improve the quality of production of the product prepared by fine silver sheet material, improve service life.
2nd, the method for present invention rolling fine silver sheet material is simple, is easily achieved, with energy consumption is low, the cycle is short, production efficiency is high
The advantages that, the sheet material after being rolled using this method need not be smoothed mechanically or thermally, and the unevenness of obtained fine silver sheet material is small
In 5mm/m, suitable for the rolling of big specification noble metal and its sheet alloy.
3rd, the present invention is by the way of side is controlled by silver-colored ingot casting commutation rolling and by the shearing of certain surplus so that rolled
The release of silver plate internal stress in journey, realizes and the warpage in rolling direction and vertical direction is controlled, so as to obtain template
Preferable silver plate material.
4th, it is 350MPa that the fine silver sheet material that the present invention rolls rolling under 25 DEG C of room temperature conditions is not less than to tensile strength, horizontal
Not small to tensile strength is 300MPa, and the mechanical property for the fine silver sheet material for illustrating to roll using the present invention meets requirement.
Technical scheme is described in further detail below by embodiment.
Embodiment
Embodiment 1
The method of the present embodiment rolling wide cut fine silver sheet material comprises the following steps：
Step 1: the silver-colored ingot casting that size is 40mm (thickness) × 400mm (width) × 450mm (length), which removes surface, is mingled with gentle hole
Afterwards, the first reciprocal rolling that 6 passages are carried out in milling train is sent directly into, the described first reciprocal rolling rolls for fixed width；
The described first rolling speed back and forth rolled is 0.3m/s, and each pass deformation is respectively 16.25%, 22.39%,
23.07%, 20%, 21.88%, 20%, total deformation 75%；Obtain size for 10mm (thickness) × 1400mm (width) ×
450mm (length) the first semi-finished product slab；The width of the first semi-finished product slab is wider than fine silver sheet material described in step 5
Spend wide 250mm；
Step 2: the tongue type region at the first semi-finished product slab both ends described in excision step one, is then fed into heat-treatment furnace
Middle progress vacuum annealing processing；The temperature of the vacuum annealing processing is 450 DEG C, the time 60min of the vacuum annealing processing,
The vacuum of the vacuum annealing processing is not less than 0.5Pa.
Step 3: after the first semi-finished product slab in step 2 after vacuum annealing is handled is rotated by 90 °, it is sent into milling train
The second reciprocal rolling of 7 passages is carried out, obtains the second semi-finished product slab；Described second rolling direction back and forth rolled and first past
The rolling direction rolled again is vertical；
The described second rolling speed back and forth rolled is 0.5m/s, and each pass deformation is respectively 14%, 23.26%,
24.24%, 24.0%, 21.05%, 23.33%, 15.0%, total deformation 80%；Obtain size for 2mm (thickness) ×
1400mm (width) × 2250mm (length) the second semi-finished product slab；
Step 4: carrying out cutting edge processing to four sides of the second semi-finished product slab described in step 3, cutting edge amount is
50mm；The width of the second semi-finished product slab after cutting edge processing is wider 100mm than the width of fine silver sheet material described in step 5, cutting edge
The length of the second semi-finished product slab after processing after the described in step 5 the 3rd reciprocal rolling than step 5 in shear treatment
The length length at least 200mm of the finished product fine silver sheet material obtained afterwards；
The of 6 passages are carried out Step 5: the second semi-finished product slab after cutting edge is handled in step 4 is sent into milling train
Three reciprocal rollings, the 3rd rolling direction back and forth rolled are identical with the rolling direction that second back and forth rolls, it is ensured that during charging
The roll of second semi-finished product slab and the milling train integrally bites in line style, finally carries out shear treatment, and it is 1.0mm to obtain size
(thickness) × 1200mm (width) × 3000mm (length) fine silver sheet material, the unevenness of the fine silver sheet material are not more than 5mm/m.
The described 3rd rolling speed back and forth rolled is 0.5m/s, and each pass deformation is respectively 10.0%, 11.1%,
12.5%, 10.7%, 12%, 9%, total deformation 50%.
The preparation process of silver-colored ingot casting is described in the step of the present embodiment one：It is right under conditions of temperature is 980 DEG C first
Graphite crucible toasts 5h, and 40min is toasted to casting die under conditions of being 700 DEG C in temperature；Silver ingot is placed in toasted place again
In graphite crucible after reason, it is then placed in vacuum induction melting furnace, under conditions of vacuum is less than 10Pa, by vacuum induction
The power of smelting furnace rises to 28kW, after silver ingot is completely melt, is further continued for the power of Raise vacuum induction melting furnace to 50kW, so
0.08MPa argon gas refining silvering solution 10min is filled with afterwards, is added activated carbon, is continuously heating to 1150 DEG C of the cast temperature of silvering solution,
Silvering solution is poured into the casting die after toasted processing again, obtained after cooling size for 40mm (thickness) × 400mm (width) ×
450mm (length) silver-colored ingot casting；The wall thickness for pouring mould is 50mm；The material of the casting die is heat resisting steel；Silver ingot
Quality purity is not less than 99.9%；The addition of the activated carbon is the 0.006% of the silver ingot quality；The speed of the casting
For 3kg/s.
Fine silver sheet material the rolling to tensile strength for 356MPa under 25 DEG C of room temperature conditions for using the present embodiment to roll；Laterally
Tensile strength is 318MPa；Unevenness is less than 5mm/m.
Embodiment 2
The method of the present embodiment rolling wide cut fine silver sheet material comprises the following steps：
Step 1: the silver-colored ingot casting that size is 45mm (thickness) × 400mm (width) × 500mm (length), which removes surface, is mingled with gentle hole
Afterwards, the first reciprocal rolling that 8 passages are carried out in milling train is sent directly into, the described first reciprocal rolling rolls for fixed width；
The described first rolling speed back and forth rolled is 0.5m/s, and each pass deformation is respectively 12%, 21.72%,
22.26%, 23.24%, 23.24%, 22.54%, 13.64%, 11.11%, total deformation 81%；Obtaining size is
8.5mm (thickness) × 1760mm (width) × 500mm (length) the first semi-finished product slab；The width of the first semi-finished product slab is than step
The wide 260mm of the width of fine silver sheet material described in rapid five.
Step 2: the tongue type region at the first semi-finished product slab both ends described in excision step one, is then fed into heat-treatment furnace
Middle progress vacuum annealing processing；The temperature of vacuum annealing processing is 500 DEG C, and the time of the vacuum annealing processing is
60min, the vacuum of the vacuum annealing processing are not less than 0.5Pa.
Step 3: after the first semi-finished product slab in step 2 after vacuum annealing is handled is rotated by 90 °, it is sent into milling train
The second reciprocal rolling of 5 passages is carried out, obtains the second semi-finished product slab；Described second rolling direction back and forth rolled and first past
The rolling direction rolled again is vertical；
The described second rolling speed back and forth rolled is 0.6m/s, and each pass deformation is respectively 15.29%, 23.61%,
23.64%, 23.81%, 21.88%, total deformation 71%；Obtain size for 2.5mm (thickness) × 1760mm (width) ×
1700mm (length) the second semi-finished product slab；
Step 4: carrying out cutting edge processing to four sides of the second semi-finished product slab described in step 3, cutting edge amount is
80mm；The width of the second semi-finished product slab after cutting edge processing is wider 100mm than the width of fine silver sheet material described in step 5, cutting edge
The length of the second semi-finished product slab after processing after the described in step 5 the 3rd reciprocal rolling than step 5 in shear treatment
The length length at least 200mm of the finished product fine silver sheet material obtained afterwards；
The of 4 passages are carried out Step 5: the second semi-finished product slab after cutting edge is handled in step 4 is sent into milling train
Three reciprocal rollings, the 3rd rolling direction back and forth rolled are identical with the rolling direction that second back and forth rolls, it is ensured that during charging
The roll of second semi-finished product slab and the milling train integrally bites in line style, finally carries out shear treatment, and it is 1.5mm to obtain size
(thickness) × 1500mm (width) × 2500mm (length) fine silver sheet material, the unevenness of the fine silver sheet material are not more than 5mm/m.
The described 3rd rolling speed back and forth rolled is 0.5m/s, and each pass deformation is respectively 12.0%, 13.6%,
13.16%, 9.1%, total deformation 40%.
The preparation process of silver-colored ingot casting is described in the step of the present embodiment one：It is right under conditions of temperature is 970 DEG C first
Graphite crucible toasts 5h, and 45min is toasted to casting die under conditions of being 690 DEG C in temperature；Silver ingot is placed in toasted place again
In graphite crucible after reason, it is then placed in vacuum induction melting furnace, under conditions of vacuum is less than 10Pa, by vacuum induction
The power of smelting furnace rises to 2830kW, after silver ingot is completely melt, is further continued for the power of Raise vacuum induction melting furnace to 50kW,
0.08MPa argon gas refining silvering solution 8min is then charged with, activated carbon is added, is continuously heating to the cast temperature 1130 of silvering solution
DEG C, then silvering solution is poured into the casting die after toasted processing, obtained after cooling size for 45mm (thickness) × 400mm (width) ×
500mm silver-colored ingot casting；The wall thickness for pouring mould is 45mm；The material of the casting die is heat resisting steel；The quality of silver ingot
Purity is not less than 99.9%；The addition of the activated carbon is the 0.005% of the silver ingot quality；The speed of the casting is
2.8kg/s。
Fine silver sheet material the rolling to tensile strength for 358MPa under 25 DEG C of room temperature conditions for using the present embodiment to roll；Laterally
Tensile strength is 324MPa；Unevenness is less than 4mm/m.
Embodiment 3
The method of the present embodiment rolling wide cut fine silver sheet material comprises the following steps：
Step 1: the silver-colored ingot casting that size is 50mm (thickness) × 400mm (width) × 550mm (length), which removes surface, is mingled with gentle hole
Afterwards, the first reciprocal rolling that 6 passages are carried out in milling train is sent directly into, the described first reciprocal rolling rolls for fixed width；
The described first rolling speed back and forth rolled is 0.4m/s, and each pass deformation is respectively 14%, 23.26%,
22.73%, 23.53%, 24.1%, 18.92%, total deformation 76%；It is 12mm (thickness) × 1480mm (width) to obtain size
× 550mm (length) the first semi-finished product slab；The width of the first semi-finished product slab is than fine silver sheet material described in step 5
The wide 260mm of width.
Step 2: the tongue type region at the first semi-finished product slab both ends described in excision step one, is then fed into heat-treatment furnace
Middle progress vacuum annealing processing；The temperature of vacuum annealing processing is 550 DEG C, and the time of the vacuum annealing processing is
70min, the vacuum of the vacuum annealing processing are not less than 0.5Pa.
Step 3: after the first semi-finished product slab in step 2 after vacuum annealing is handled is rotated by 90 °, it is sent into milling train
The second reciprocal rolling of 6 passages is carried out, obtains the second semi-finished product slab；Described second rolling direction back and forth rolled and first past
The rolling direction rolled again is vertical；
The described second rolling speed back and forth rolled is 0.4m/s, and each pass deformation is respectively 12.5%, 19.05%,
23.53,23.08%, 20.0%, 12.5%, total deformation 71%；Obtain size for 3.5mm (thickness) × 1480mm (width) ×
1885mm (length) the second semi-finished product slab；
Step 4: carrying out cutting edge processing to four sides of the second semi-finished product slab described in step 3, cutting edge amount is
75mm；The width of the second semi-finished product slab after cutting edge processing is wider 110mm than the width of fine silver sheet material described in step 5, cutting edge
The length of the second semi-finished product slab after processing after the described in step 5 the 3rd reciprocal rolling than step 5 in shear treatment
The length length at least 200mm of the finished product fine silver sheet material obtained afterwards；
The of 4 passages are carried out Step 5: the second semi-finished product slab after cutting edge is handled in step 4 is sent into milling train
Three reciprocal rollings, the 3rd rolling direction back and forth rolled are identical with the rolling direction that second back and forth rolls, it is ensured that during charging
The roll of second semi-finished product slab and the milling train integrally bites in line style, finally carries out shear treatment, and it is 2mm to obtain size
(thickness) × 1200mm (width) × 3000mm (length) fine silver sheet material, the unevenness of the fine silver sheet material are not more than 5mm/m.
The described 3rd rolling speed back and forth rolled is 0.7m/s, and each pass deformation is respectively 11.43%, 12.9%,
14.81%, 13.04%, total deformation 47%.
The preparation process of silver-colored ingot casting is described in the step of the present embodiment one：It is right under conditions of temperature is 980 DEG C first
Graphite crucible toasts 4.5h, and 50min is toasted to casting die under conditions of being 700 DEG C in temperature；Silver ingot is placed in again toasted
In graphite crucible after processing, it is then placed in vacuum induction melting furnace, under conditions of vacuum is less than 10Pa, by vacuum sense
Answer the power of smelting furnace to rise to 25kW, after silver ingot is completely melt, be further continued for the power of Raise vacuum induction melting furnace to 50kW,
0.08MPa argon gas refining silvering solution 7min is then charged with, activated carbon is added, is continuously heating to the cast temperature 1150 of silvering solution
DEG C, then silvering solution is poured into the casting die after toasted processing, obtained after cooling size for 50mm (thickness) × 400mm (width) ×
550mm (length) silver-colored ingot casting；The wall thickness for pouring mould is 30mm~50mm；The material of the casting die is heat resisting steel；
The quality purity of silver ingot is not less than 99.9%；The addition of the activated carbon is the 0.005% of the silver ingot quality；The casting
Speed be 3kg/s.
Fine silver sheet material the rolling to tensile strength for 365MPa under 20 DEG C of room temperature conditions for using the present embodiment to roll；Laterally
Tensile strength is 335MPa；Unevenness is less than 3mm/m.
Embodiment 4
The method of the present embodiment rolling wide cut fine silver sheet material comprises the following steps：
Step 1: the silver-colored ingot casting that size is 55mm (thickness) × 350mm (width) × 450mm (length), which removes surface, is mingled with gentle hole
Afterwards, the first reciprocal rolling that 7 passages are carried out in milling train is sent directly into, the described first reciprocal rolling rolls for fixed width；
The described first rolling speed back and forth rolled is 0.5m/s, and each pass deformation is respectively 14.9%, 23.08%,
22.22%, 22.73%, 17.65%, 17.86%, 13.04%, total deformation 82%；Obtain size for 10mm (thickness) ×
1790mm (width) × 450mm (length) the first semi-finished product slab；The width of the first semi-finished product slab is than described in step 5
The wide 290mm of width of fine silver sheet material.
Step 2: the tongue type region at the first semi-finished product slab both ends described in excision step one, is then fed into heat-treatment furnace
Middle progress vacuum annealing processing；The temperature of vacuum annealing processing is 600 DEG C, and the time of the vacuum annealing processing is
90min, the vacuum of the vacuum annealing processing are not less than 0.5Pa.
Step 3: after the first semi-finished product slab in step 2 after vacuum annealing is handled is rotated by 90 °, it is sent into milling train
The second reciprocal rolling of 7 passages is carried out, obtains the second semi-finished product slab；Described second rolling direction back and forth rolled and first past
The rolling direction rolled again is vertical；
The described second rolling speed back and forth rolled is 0.6m/s, and each pass deformation is respectively 15%, 23.53%,
24%, 24%, 21.05%, 21.43%, 9%, total deformation 80%；Obtain size for 2mm (thickness) × 1790mm (width) ×
2250mm (length) the second semi-finished product slab；
Step 4: carrying out cutting edge processing to four sides of the second semi-finished product slab described in step 3, cutting edge amount is 90；
The width of the second semi-finished product slab after cutting edge processing is wider 110mm than the width of fine silver sheet material described in step 5, cutting edge processing
Length of the second semi-finished product slab afterwards after the described in step 5 the 3rd reciprocal rolling than step 5 in after shear treatment
The length length at least 200mm of the finished product fine silver sheet material arrived；
The of 7 passages are carried out Step 5: the second semi-finished product slab after cutting edge is handled in step 4 is sent into milling train
Three reciprocal rollings, the 3rd rolling direction back and forth rolled are identical with the rolling direction that second back and forth rolls, it is ensured that during charging
The roll of second semi-finished product slab and the milling train integrally bites in line style, finally carries out shear treatment, and it is 1mm to obtain size
(thickness) × 1500mm (width) × 3000mm (length) fine silver sheet material, the unevenness of the fine silver sheet material are not more than 5mm/m.
The described 3rd rolling speed back and forth rolled is 0.8m/s, and each pass deformation is respectively 8%, 9.2%,
11.98%, 15%, 11%, 5%, total deformation 50%.
The preparation process of silver-colored ingot casting is described in the step of the present embodiment one：It is right under conditions of temperature is 1000 DEG C first
Graphite crucible toasts 3h, and 60min is toasted to casting die under conditions of being 700 DEG C in temperature；Silver ingot is placed in toasted place again
In graphite crucible after reason, it is then placed in vacuum induction melting furnace, under conditions of vacuum is less than 10Pa, by vacuum induction
The power of smelting furnace rises to 20kW, after silver ingot is completely melt, is further continued for the power of Raise vacuum induction melting furnace to 50kW, so
0.08MPa argon gas refining silvering solution 10min is filled with afterwards, is added activated carbon, is continuously heating to 1150 DEG C of the cast temperature of silvering solution,
Silvering solution is poured into the casting die after toasted processing again, obtained after cooling size for 55mm (thickness) × 350mm (width) ×
450mm (length) silver-colored ingot casting；The wall thickness for pouring mould is 30mm~50mm；The material of the casting die is heat resisting steel；
The quality purity of silver ingot is not less than 99.9%；The addition of the activated carbon is the 0.006% of the silver ingot quality；The casting
Speed be 3kg/s.
Fine silver sheet material the rolling to tensile strength for 362MPa under 20 DEG C of room temperature conditions for using the present embodiment to roll；Laterally
Tensile strength is 332MPa；Unevenness is less than 5mm/m.
Embodiment 5
The method of the present embodiment rolling wide cut fine silver sheet material comprises the following steps：
Step 1: the silver-colored ingot casting that size is 70mm (thickness) × 300mm (width) × 500mm (length), which removes surface, is mingled with gentle hole
Afterwards, the first reciprocal rolling that 9 passages are carried out in milling train is sent directly into, the described first reciprocal rolling rolls for fixed width；
The described first rolling speed back and forth rolled is 0.6m/s, and each pass deformation is respectively 8.6%, 21.88%,
25%, 24%, 22.81%, 22.73%, 17.65%, 14.3%, 12.5%, total deformation 90%；Obtaining size is
10.5mm × 1760mm × 500mm the first semi-finished product slab；The width of the first semi-finished product slab is than described in step 5
The wide 260mm of width of fine silver sheet material；
Step 2: the tongue type region at the first semi-finished product slab both ends described in excision step one, is then fed into heat-treatment furnace
Middle progress vacuum annealing processing；The temperature of vacuum annealing processing is 400 DEG C, and the time of the vacuum annealing processing is
90min, the vacuum of the vacuum annealing processing are not less than 0.5Pa.
Step 3: after the first semi-finished product slab in step 2 after vacuum annealing is handled is rotated by 90 °, it is sent into milling train
The second reciprocal rolling of 9 passages is carried out, obtains the second semi-finished product slab；Described second rolling direction back and forth rolled and first past
The rolling direction rolled again is vertical；
The described second rolling speed back and forth rolled is 0.3m/s, and each pass deformation is respectively 10%, 14.7%,
19.75%, 25%, 19.93%, 18.56%, 16.7%, 10%, 7.4%, total deformation 76%；It is 2.5mm to obtain size
× 1760mm × 2100mm the second semi-finished product slab；
Step 4: four sides of the second semi-finished product slab described in step 3 are carried out with cutting edge processing, described the second half
The cutting edge amount of the width of finished product slab is 120mm, and the cutting edge amount of the length direction of the second semi-finished product slab is 50mm；
The width of the second semi-finished product slab after cutting edge processing is wider 120mm than the width of fine silver sheet material described in step 5, cutting edge processing
Length of the second semi-finished product slab afterwards after the described in step 5 the 3rd reciprocal rolling than step 5 in after shear treatment
The length length at least 200mm of the finished product fine silver sheet material arrived；
The of 4 passages are carried out Step 5: the second semi-finished product slab after cutting edge is handled in step 4 is sent into milling train
Three reciprocal rollings, the 3rd rolling direction back and forth rolled are identical with the rolling direction that second back and forth rolls, it is ensured that during charging
The roll of second semi-finished product slab and the milling train integrally bites in line style, finally carries out shear treatment, and it is 1.5mm to obtain size
× 1500mm × 3000mm fine silver sheet material, the unevenness of the fine silver sheet material are not more than 5mm/m.
The described 3rd rolling speed back and forth rolled is 1m/s, and each pass deformation is respectively that each pass deformation is respectively
12.0%, 13.6%, 13.16%, 9.1%, total deformation 40%, total deformation 40%.
The preparation process of silver-colored ingot casting is described in the step of the present embodiment one：It is right under conditions of temperature is 1000 DEG C first
Graphite crucible toasts 3h, and 60min is toasted to casting die under conditions of being 700 DEG C in temperature；Silver ingot is placed in toasted place again
In graphite crucible after reason, it is then placed in vacuum induction melting furnace, under conditions of vacuum is less than 10Pa, by vacuum induction
The power of smelting furnace rises to 20kW, after silver ingot is completely melt, is further continued for the power of Raise vacuum induction melting furnace to 50kW, so
0.08MPa argon gas refining silvering solution 10min is filled with afterwards, is added activated carbon, is continuously heating to 1150 DEG C of the cast temperature of silvering solution,
Silvering solution is poured into the casting die after toasted processing again, obtained after cooling size for 70mm (thickness) × 300mm (width) ×
500mm (length) silver-colored ingot casting；The wall thickness for pouring mould is 30mm~50mm；The material of the casting die is heat resisting steel；
The quality purity of silver ingot is not less than 99.9%；The addition of the activated carbon is the 0.006% of the silver ingot quality；The casting
Speed be 3kg/s.
Fine silver sheet material the rolling to tensile strength for 365MPa under 20 DEG C of room temperature conditions for using the present embodiment to roll；Laterally
Tensile strength is 335MPa；Unevenness is less than 5mm/m.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions.It is every according to invention skill
Any simple modification, change and equivalence change that art is substantially made to above example, still fall within technical solution of the present invention
Protection domain in.
Claims (7)
1. a kind of milling method of wide cut fine silver sheet material, it is characterised in that this method comprises the following steps：
Step 1: thickness is 40mm~70mm, width is 300mm~400mm, and the silver-colored ingot casting that length is 450mm~550mm removes
After surface is mingled with gentle hole, it is sent directly into milling train and carries out the first back and forth rolling, obtain the first semi-finished product slab；Described first is past
Multiple rolling rolls for fixed width；
Step 2: the tongue type region at the first semi-finished product slab both ends described in excision step one, is then fed into heat-treatment furnace
Row vacuum annealing is handled；
Step 3: after the first semi-finished product slab in step 2 after vacuum annealing is handled is rotated by 90 °, it is sent into milling train and carries out
Second reciprocal rolling, obtains the second semi-finished product slab；
Step 4: four sides of the second semi-finished product slab described in step 3 are carried out with cutting edge processing, cutting edge amount be 50mm~
100mm；
The 3rd back and forth rolling is carried out Step 5: the second semi-finished product slab in step 4 after cutting edge is handled is sent into milling train,
Ensure that the roll of the second semi-finished product slab and the milling train during charging integrally bites in line style, finally carry out shear treatment, obtain
Thickness is 1mm~2mm, and width is 1200mm~1500m, and length is 2000~3000mm fine silver sheet material, the fine silver sheet material
Unevenness be not more than 5mm/m.
2. the milling method of a kind of wide cut fine silver sheet material according to claim 1, it is characterised in that described in step 1
The wide 250mm of width of finished product fine silver sheet material described in effective width ratio step 5 behind half finished product slab excision both ends She Xing regions
~300mm.
3. the milling method of a kind of wide cut fine silver sheet material according to claim 1, it is characterised in that described in step 1
The one road number back and forth rolled is 5~9 passages, and the described first pass deformation rate back and forth rolled is 10%~25%, described the
One total deformation back and forth rolled is 70%~90%, and the described first rolling speed back and forth rolled is 0.3m/s~0.6m/s.
4. the milling method of a kind of wide cut fine silver sheet material according to claim 1, it is characterised in that true described in step 2
The temperature of sky annealing is 400 DEG C~600 DEG C, and time of vacuum annealing processing is 60min~90min, the vacuum
The vacuum of annealing is not less than 0.5Pa.
5. the milling method of a kind of wide cut fine silver sheet material according to claim 1, it is characterised in that described in step 3
The two road numbers back and forth rolled are 5~9 passages, and the described second pass deformation rate back and forth rolled is 10%~25%, described the
Two total deformations back and forth rolled are 70%~85%, and the described second rolling speed back and forth rolled is 0.3m/s~0.6m/s.
6. the milling method of a kind of wide cut fine silver sheet material according to claim 1, it is characterised in that in step 4 at cutting edge
The width of the second semi-finished product slab after reason is wider 60mm~120mm than the width of fine silver sheet material described in step 5, cutting edge processing
Length of the second semi-finished product slab afterwards after the described in step 5 the 3rd reciprocal rolling than step 5 in after shear treatment
The length length at least 200mm of the finished product fine silver sheet material arrived.
7. the milling method of a kind of wide cut fine silver sheet material according to claim 1, it is characterised in that described in step 5
The three road numbers back and forth rolled are 4~7 passages, and the 3rd pass deformation rate back and forth rolled is the 8%~15%, the described 3rd
The total deformation back and forth rolled is 40%~50%, and the described 3rd rolling speed back and forth rolled is 0.5m/s~1m/s.
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| JP4799294B2 (en) * | 2006-06-30 | 2011-10-26 | 古河スカイ株式会社 | Method for producing high formability Al-Mg alloy plate |
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Address after: 710201, No. 18, middle section of Jing Gao Bei Road, Jinghe new town, Xi'an economic and Technological Development Zone, Shaanxi, Xi'an Patentee after: Xi'an noble rare metal materials Co.,Ltd. Address before: 710201, No. 18, middle section of Jing Gao Bei Road, Jinghe new town, Xi'an economic and Technological Development Zone, Shaanxi, Xi'an Patentee before: XI'AN NUOBOER RARE & NOBLE METAL MATERIALS Co.,Ltd. |