A kind of highly conductive copper-silver-tin-chromium alloy plate strip and its preparation and processing method

A processing method and high-conductivity technology, applied in the field of copper-silver-tin-chromium alloy sheets and strips and their preparation and processing, can solve the problems of low strength, affecting the service life of the motor, poor softening resistance, etc., to improve the electrical conductivity and increase the heat dissipation. The effect, the performance is uniform and stable

Active Publication Date: 2020-05-08
NINGBO XINGYE SHENGTAI GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of motor commutator contact materials will directly affect the service life of the motor. Traditional copper-based high-conductivity contact materials cannot meet the development needs of modern motor commutator contact sheet materials due to their low strength and poor softening resistance. Development of a new motor commutator contact sheet material

Method used

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  • A kind of highly conductive copper-silver-tin-chromium alloy plate strip and its preparation and processing method
  • A kind of highly conductive copper-silver-tin-chromium alloy plate strip and its preparation and processing method
  • A kind of highly conductive copper-silver-tin-chromium alloy plate strip and its preparation and processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The composition of the alloy is shown in Example 1 of Table 1.

[0030] 1. Melting: use non-vacuum induction furnace for melting. First add copper (Cu), after melting, then add pure silver (Ag), pure tin (Sn), pure zinc (Zn) at low temperature, and then add copper-chromium alloy (Cu-Cr), copper-boron alloy (Cu -B), then covered with calcined charcoal, the thickness of the covering layer was 30cm, and degassed with argon for 30min. The melting temperature is 1160°C, and the casting temperature is controlled at 1140°C.

[0031] 2 Hot-rolling: The hot-rolled slab is rolled out at a temperature of 905±10°C, rolled for 9 passes, and the total hot-rolled deformation is 90%.

[0032] 3. Face milling: face milling of the alloy (0.60mm milling on the upper and lower surfaces).

[0033] 4. Preliminary rolling: the alloy strip after face milling is subjected to 85% deformation treatment.

[0034] 5. Intermediate annealing: put the cold-rolled strip into a bell-type heat treatm...

Embodiment 2

[0042] The composition of the alloy is shown in Example 2 of Table 1.

[0043] 1. Melting: use non-vacuum induction furnace for melting. First add copper (Cu), after melting, then add pure silver (Ag), pure tin (Sn), pure zinc (Zn) at low temperature, and then add copper-chromium alloy (Cu-Cr), copper-boron alloy (Cu -B), then covered with calcined charcoal, the thickness of the covering layer was 30cm, and degassed with argon for 30min. The melting temperature is 1150°C, and the casting temperature is controlled at 1140°C.

[0044] 2 Hot rolling: the temperature of hot rolling of cast slab is 921±10°C, 9 passes of rolling, and the total deformation of hot rolling is 91%.

[0045] 3. Face milling: face milling of the alloy (0.60mm milling on the upper and lower surfaces).

[0046] 4. Preliminary rolling: the alloy strip after face milling is subjected to 78% deformation treatment.

[0047] 5. Intermediate annealing: put the cold-rolled strip into a bell-type heat treatment...

Embodiment 3

[0055] The composition of the alloy is shown in Example 3 of Table 1.

[0056] 1. Melting: use non-vacuum induction furnace for melting. First add copper (Cu), after melting, then add pure silver (Ag), pure tin (Sn), pure zinc (Zn) at low temperature, and then add copper-chromium alloy (Cu-Cr), copper-boron alloy (Cu -B), then covered with calcined charcoal, the thickness of the covering layer was 30cm, and degassed with argon for 30min. The melting temperature is 1170°C, and the casting temperature is controlled at 1150°C.

[0057] 2. Hot rolling: the temperature of casting slab hot rolling is 895±10℃, 9 passes of rolling, and the total deformation of hot rolling is 90%.

[0058] 3. Face milling: face milling of the alloy (0.60mm milling on the upper and lower surfaces).

[0059] 4. Preliminary rolling: 80% deformation treatment is carried out on the alloy strip after face milling.

[0060] 5. Intermediate annealing: put the cold-rolled strip into a bell-type heat treatme...

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Abstract

The invention relates to a high-conductivity copper sliver tin chrome alloy plate strip and a preparation and processing method thereof, and belongs to the field of nonferrous metal processing. The high-conductivity copper sliver tin chrome alloy plate strip comprises, by weight, 0.02-0.03% of Ag, 0.005-0.01% of Sn, 0.005-0.01% of Cr, 0.002-0.005% of Zn, 0.0005-0.001% of B, and the balance Cu. Thehigh-conductivity cooper sliver tin chrome alloy plate strip is obtained through the processing technologies of melting, casting, hot rolling, milling, blooming, intermediate annealing, pickling, intermediate rolling, on-line solid solution, finish rolling, on-line aging, stretch bending correction and the like. According to the copper sliver tin chrome alloy plate strip, the tensile strength ofthe copper alloy is 390-470 MPa, the Vickers hardness is 115-150 HV, the elongation rate is 6-11%, the conductivity is greater than or equal to 96.8% IACS, the softening temperature is greater than orequal to 360 DEG C, the corrosion resistance rate is 0.062-0.096 g.m<-2>.h<-1>, and the corrosive medium is artificial sea water.

Description

technical field [0001] The invention mainly relates to a copper-silver-tin-chromium alloy plate and strip and a preparation and processing method thereof, in particular to a highly conductive copper-silver-tin-chromium alloy plate and strip and a preparation and processing method thereof. Background technique [0002] Traditional red copper alloy strips are widely used in transformers, relays and other fields due to their high electrical conductivity, high thermal conductivity, and easy processing and forming. With the advancement of science and technology and the development of new industries, the application fields of copper-based alloy strips are constantly expanding. By adding trace amounts of alloying elements to copper alloys, multi-element alloys are formed. At the same time, with the optimization of processing technology, its comprehensive performance is further improved. Highly conductive copper-silver-tin-chromium alloy is such a type of alloy, which can be used in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/03B21C37/04C22F1/08
Inventor 邵烨廖骏骏林志豪刘宁刘峰倪冠冠宋守美
Owner NINGBO XINGYE SHENGTAI GROUP
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