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Large-strain nickel-chromium alloy ultrafine filament monofilament continuous annealing device

A nickel-chromium alloy and annealing device technology, applied in furnaces, heat treatment equipment, manufacturing tools, etc.

Active Publication Date: 2022-01-21
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of the plastic deformation performance of large-strain NiCr alloy wire in the drawn state, the invention provides a continuous annealing device for large-strain nickel-chromium alloy ultra-fine wire monofilament

Method used

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  • Large-strain nickel-chromium alloy ultrafine filament monofilament continuous annealing device
  • Large-strain nickel-chromium alloy ultrafine filament monofilament continuous annealing device
  • Large-strain nickel-chromium alloy ultrafine filament monofilament continuous annealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Turn on electricity and set the heat treatment temperature to 850°C, feed high-purity nitrogen gas into the quartz tube 6 from the first gas inlet 10 and the second gas inlet 11 respectively, and the flow rates are about 0L / min, 1L / min and 2L / min respectively, pre- Heat for half an hour. Thermocouples are used to measure the temperature in the quartz tube 6. The effective heating length of the quartz tube 6 is 55cm. The measurement point is measured from the entrance of the ultra-fine wire in the effective heating area. The distance is 5cm. 12 points of temperature are tested in total. The measurement results are as follows: figure 2 shown. When about 1L / min of high-purity nitrogen gas is injected from the two gas injection ports at 45° and 225°, the air can be isolated to create a symmetrical and stable temperature field. Compared with the temperature field without protective gas (0L / min), the temperature field has no obvious temperature difference, and the temperatu...

Embodiment 2

[0028] Turn on the power and set the heat treatment temperature to 930°C and the winding tension to 1g, respectively pass high-purity nitrogen gas into the quartz tube 6 from the first gas inlet 10 and the second gas inlet 11, the flow rate is about 1L / min, preheat for half an hour . Insert the wire reel wound with drawn NiCr alloy wire with a diameter of about 21.14 μm (the strain amount is about 46.6%) on the pay-off wheel 2, and pull the NiCr alloy wire 3 through the guide wheel 4 to change from vertical direction to horizontal direction , the NiCr alloy wire is passed through the quartz tube 6 with a threading tool, and after the guide wheel 5 and the tension adjustment wheel 8 change directions, the NiCr alloy wire is stuck on the coil on the wire receiving wheel 9 . Drive the take-up and take-off system to control the take-up speed to 30 rpm (the residence time in the quartz tube 6 is about 7.3s), and annealed NiCr alloy wire is obtained.

[0029] Stress-strain test ana...

Embodiment 3

[0031] Drawing and reducing the NiCr alloy wire after the annealing in Example 2, electrifying and setting the heat treatment temperature as 930° C. and the wire drawing tension as 1 g, and passing into the quartz tube 6 from the first gas inlet 10 and the second gas inlet 11 respectively. High-purity nitrogen, the flow rate is about 1L / min, preheat for half an hour. Clamp the wire reel wound with a drawn NiCr alloy wire with a diameter of about 14.91 μm (the strain amount is about 40.3%) on the pay-off wheel 2, and pull the NiCr alloy wire 3 through the guide wheel 4 to change from the vertical direction to the horizontal direction , the NiCr alloy wire is passed through the quartz tube 6 with a threading tool, and after the guide wheel 5 and the tension adjustment wheel 8 change directions, the NiCr alloy wire is stuck on the coil on the wire receiving wheel 9 . Drive the take-up and take-up system, control the take-up speed to 30 rpm (the residence time in the quartz tube 6...

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Abstract

The invention discloses a large-strain nickel-chromium alloy ultrafine filament monofilament continuous annealing device which comprises a filament unwinding system arranged at the front end, a filament winding system arranged at the rear end and a temperature control system arranged between the filament unwinding system and the filament winding system. The temperature control system comprises a quartz tube, a heating ring arranged outside the quartz tube and a heat insulation layer arranged outside the heating ring; the wire unwinding system and the wire winding system are matched to enable a superfine NiCr alloy wire in the drawing state to pass through the quartz tube at a constant speed; and a first gas inlet forming an angle of 45 degrees with the quartz tube and a second gas inlet forming an angle of 225 degrees with the quartz tube are formed in the front end of the quartz tube. Nitrogen is introduced into the first gas inlet and the second gas inlet respectively, so that effective annealing temperature fields which are symmetrically distributed are formed in the quartz tube. According to the method, the plastic deformation performance of the large-strain NiCr alloy wire in the drawing state can be recovered, the temperature distribution uniformity of a heat treatment area can be effectively improved, and the surface oxidation problem in the annealing process of the alloy wire can be solved.

Description

technical field [0001] The invention belongs to the technical field of Z-pinch driven inertial confinement fusion (ICF). [0002] technical background [0003] In Z-pinch-driven inertial confinement fusion (ICF) technology, the initial configuration of the plasma can be well realized by the filament array load. Among them, the K-shell radiation generated by medium and low Z element filaments can be used to diagnose the ion and electron temperatures in the pinching process. According to the driving current of the pulse power device, it is necessary to develop ultra-fine Ni80Cr20 alloy (NiCr) wires with different diameters (10μm~15μm) to obtain the K shell lines of Ni and Cr. Cold drawing plastic deformation is the main technology for preparing ultra-fine metal wire, and the diameter is gradually reduced to the target diameter through multi-pass reduction and annealing processes. Under laboratory conditions, the research on the plastic deformation technology of NiCr alloy wir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/10C21D1/26C21D9/52
CPCC22F1/10C21D1/26C21D9/525Y02E30/10
Inventor 周秀文朱晔刘旭东李恺吴卫东罗炳池李文琦牛高
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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