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Preparation method of nickel-chromium-based precision resistance alloy foil

A precision resistor, nickel-chromium-based technology, used in metal rolling, metal rolling, metal processing equipment and other directions, can solve the problem of inability to achieve high surface quality nickel-chromium-based resistance alloy foil preparation and other problems, achieve excellent surface quality, The effect of improving the surface quality

Active Publication Date: 2020-05-08
BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of nickel-chromium-based precision resistance alloy foil, which solves the problem that the existing processing technology cannot realize the preparation of high-surface-quality nickel-chromium-based resistance alloy foil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing nickel-chromium-based precision resistance alloy foil, the specific steps and parameters are as follows:

[0030] 1. The 6J22 alloy slab with a total amount of non-metallic inclusions of 0.5 grade, an oxygen content of 10ppm, and a thickness of 80mm was heated to 1100°C, and after 7 passes, it was hot-rolled to a strip blank with a thickness of 5.5mm;

[0031] 2. Carry out homogenization annealing treatment on the billet, the heating temperature is 1050°C, and the temperature is kept for 2 hours.

[0032] 3. Carry out surface oxide layer destruction treatment on the strip blank obtained in the second step, and carry out rough rolling on a four-roll cold rolling mill, and the rolling deformation is 10%;

[0033] 4. Clean the surface of the blank obtained in step 3, firstly use a grinding wheel for rough grinding, and then use a thousand impeller for fine grinding;

[0034] 5. Carry out the thick semi-finished product rolling on the strip after gri...

Embodiment 2

[0041] A method for preparing nickel-chromium-based precision resistance alloy foil, the specific steps and parameters are as follows:

[0042] 1. The 6J23 alloy slab with a total amount of non-metallic inclusions of 0.5 grade, an oxygen content of 8ppm, and a thickness of 90mm was heated to 1150°C, and after 9 passes, it was hot-rolled to a strip blank with a thickness of 5.8mm;

[0043] 2. Carry out homogenization annealing treatment on the billet, the heating temperature is 1100°C, and the temperature is kept for 2 hours.

[0044] 3. Carry out surface oxide layer destruction treatment on the strip blank obtained in the second step, and carry out rough rolling on a four-roll cold rolling mill, and the rolling deformation is 14%;

[0045] 4. Grind the surface of the blank obtained in step 3, first use a grinding wheel for rough grinding, and then use a thousand impeller for fine grinding;

[0046] 5. Carry out the thick semi-finished product rolling on the strip after grindi...

Embodiment 3

[0053] A method for preparing nickel-chromium-based precision resistance alloy foil, the specific steps and parameters are as follows:

[0054] 1. The 6J24 alloy slab with a total amount of non-metallic inclusions of 0 grade, an oxygen content of 10ppm, and a thickness of 100mm was heated to 1180°C, and after 9 passes, it was hot-rolled to a strip billet with a thickness of 6.0mm;

[0055] 2. Carry out homogenization annealing treatment on the billet, the heating temperature is 1150°C, and the temperature is kept for 1 hour.

[0056] 3. Carry out surface oxide layer destruction treatment on the strip blank obtained in the second step, and carry out rough rolling on a four-roll cold rolling mill, and the rolling deformation is 15%;

[0057] 4. Grind the surface of the blank obtained in step 3, first use a grinding wheel for rough grinding, and then use a thousand impeller for fine grinding;

[0058] 5. Carry out the thick semi-finished product rolling on the strip after grindi...

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Abstract

The invention discloses a preparation method of a nickel-chromium-based precision resistance alloy foil, and belongs to the technical field of resistance alloy manufacturing. The preparation method comprises the following specific steps that a flat billet is heated, hot rolling is carried out on the flat billet for 7 or 9 passes to obtain a strip billet with the thickness of 5.5 - 6.0 mm; heat preservation is carried out after homogenizing annealing treatment is carried out on the strip billet, and then rough rolling is carried out; thick semi-finished product rolling is carried out on a ground strip billet on a four-high rolling mill, rolling is carried out for three times, the rolling thickness is 0.45 - 0.50 mm, surface abrasive belt cleaning is carried out on a strip, then thin semi-finished product rolling is carried out on the strip on a 20-high rolling mill, and surface polishing is carried out on the rolled strip; and finally, finish rolling is carried out on the strip on a 32-high rolling mill to obtain a finished foil with the thickness of 0.01 - 0.02 mm. The preparation method of the nickel-chromium-based precision resistance alloy foil has the advantages that the pinhole defect caused by the steel purity problem of the finished foil is avoided, surface oxide layer and defect treatment is more thorough, and oxide skin particles left on the surface can be removed favorably, so that the surface quality is improved.

Description

technical field [0001] The invention belongs to the technical field of resistance alloy manufacture, and in particular relates to a preparation method of a nickel-chromium-based precision resistance alloy foil. Background technique [0002] With the development of industries such as micro-electromechanical, micro-manufacturing, robotics, and intelligent manufacturing, these cutting-edge micro-manufacturing fields put forward higher and higher requirements for high-quality foil materials. The production capacity of high-quality foil materials has become the key to influencing micro-manufacturing and promoting the miniaturization of products, and it is also one of the symbols of a country's micro-molding and micro-manufacturing capabilities. [0003] As the key material of the foil strain gauge, nickel-chromium-based precision resistance alloy foil plays a decisive role in the performance of the resistance strain gauge. In terms of the surface quality of the foil, it is requi...

Claims

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Application Information

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IPC IPC(8): B21B1/40B21B45/06C22F1/10C22F1/11C22F1/02B24B1/00
CPCB21B1/40B21B45/06B24B1/00C22F1/02C22F1/10C22F1/11
Inventor 于敏蔡凯洪张荣张乐柳海波刘海稳陈晓莉
Owner BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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