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High-vacuum annealing process of armored thermocouple and armored wire

A technology of armored thermocouples and annealing process, which is applied in the direction of thermometers, cable/conductor manufacturing, circuits, etc., which are directly sensitive to heat, electric/magnetic elements, etc., to achieve high insulation resistance, high physical and chemical stability, and high dielectric intensity effect

Pending Publication Date: 2021-02-05
沈阳宇光温度仪表有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the existing conventional heat treatment in the heating process of armored thermocouples or armored wires, and propose a high vacuum annealing process for armored thermocouples and armored wires

Method used

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  • High-vacuum annealing process of armored thermocouple and armored wire

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Embodiment

[0041] Step 1: Set the PID temperature regulator and PLD programming according to the requirements of the annealing material, and complete the high vacuum annealing furnace body, vacuum system, cooling water system, electrical system, pumping, exhaust and inflation system , electronic control and instrumentation systems are prepared;

[0042] Step 2: Complete all system inspections, put in the main power supply, put in the voltage regulator and control panel power supply, put in the pneumatic system of the start-up air compressor, put in the gas charging system, and keep all kinds of equipment in good condition; open the furnace cover to complete the charging, and lift the furnace cover in place 1. Open the vent valve and start the rotary vane pump. When the furnace pressure reaches 800pa, preheat the diffusion pump and turn on the Roots pump at the same time. After heating for 60 minutes, open the main valve and the diffusion pump for vacuuming;

[0043] Step 3: When the vacu...

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Abstract

The invention discloses a high-vacuum annealing process of an armored thermocouple and an armored wire. The high-vacuum annealing process comprises the following steps: A, preparing a system and equipment; B, completing PLD programming (system preparation and system condition completion), closing a main power supply, charging, ascending a furnace cover in place, starting a circulating water system, starting a control gas source and pneumatic valve system, starting an instrument and control system, starting a vacuum system, starting a rotary vane pump and starting a roots pump; C, when the conditions are met, starting a diffusion pump, when the vacuum degree is reached, putting into a heating system, keeping constant temperature for a period of time according to a heating curve, and finallycooling; and D, when the temperature reaches 50 DEG C, shutting down the furnace for material taking, and shutting down all the systems. The armored thermocouple and the armored wire which are subjected to high-vacuum annealing are bright in surface and free of pits under a microscope, the withstand voltage between wires and the withstand voltage of a wire pair armor body can generally reach 2000V or above, the insulation resistance can generally reach 20 G and can reach 100 G or above to the maximum, the armored thermocouple and the armored wire are bent, and the armor body does not crack.

Description

technical field [0001] The invention relates to the technical field of annealing technology, in particular to a high vacuum annealing technology for armored thermocouples and armored wires. Background technique [0002] Armored cables are made of different material conductors packed in metal sleeves with insulating materials and processed into a bendable solid assembly. Armored cables include armored thermocouples, armored thermal resistors, armored heaters and armored leads. They are mainly used for temperature measurement, signal transmission and special heating in chemical industry, metallurgy, machinery manufacturing, power generation and scientific experiments. The most popular is the armored thermocouple. The mechanical protection layer of the armored cable can be added to the cable of any structure to increase the mechanical strength of the cable and improve the ability to resist erosion. It is designed for areas that are susceptible to mechanical damage and are extre...

Claims

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Application Information

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IPC IPC(8): H01B13/00G01K7/02C21D1/26C21D1/773C21D9/52C21D11/00
CPCC21D1/26C21D1/773C21D9/525C21D11/00G01K7/02H01B13/0016
Inventor 栾宇光赵汉杰贾天岭姜勇马国军
Owner 沈阳宇光温度仪表有限公司
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