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Method of drying welding electrode through microwave

A technology of microwave drying and electric welding electrodes, applied in progressive dryers, drying solid materials, drying, etc., can solve problems such as long production cycle, achieve the effects of ensuring quality, preventing skin cracking, and low energy consumption

Inactive Publication Date: 2015-08-26
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method provided by this patent overcomes the shortcoming of the long production cycle in conventional drying methods, and at the same time effectively solves the problem of metal chain ignition by covering the metal transmission chain with plastic or ceramic composite plates, but there is still a difference in drying efficiency between the upper and lower sides yin and yang side and other disadvantages

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The method for this microwave drying electrode, its concrete steps are as follows:

[0019] First, the welding rod with a moisture content of 2wt.% is suspended on the transmission chain by an electromagnet, and the welding rod is transported to the microwave cavity at a rate of 1m / min for three-stage microwave drying;

[0020] The first stage of microwave drying: start the dehumidification system, and control the air volume of the dehumidification fan at 1500cm 3 / h, adjust the microwave output power to 2kW, raise the temperature of the electrode from room temperature to 40°C at a rate of 5°C / min, and keep it warm for 13min;

[0021] The second stage of microwave drying: adjust the microwave output power to 6kW, and raise the temperature of the welding electrode after a stage of microwave drying from 40°C to 120°C at a rate of 10°C / min for 13 minutes;

[0022] The third stage of microwave drying: Adjust the microwave output power to 2kW, and keep the electrode dried b...

Embodiment 2

[0024] The method for this microwave drying electrode, its concrete steps are as follows:

[0025] First, the welding rod with a moisture content of 5wt.% is suspended on the transmission chain by an electromagnet, and the welding rod is transported to the microwave cavity at a speed of 3m / min for three-stage microwave drying;

[0026] The first stage of microwave drying: start the dehumidification system, and control the air volume of the dehumidification fan at 1200cm 3 / h, adjust the microwave output power to 4kW, heat the electrode from room temperature to 80°C at a rate of 10°C / min, and keep it warm for 10min;

[0027] The second stage of microwave drying: adjust the microwave output power to 4kW, and raise the temperature of the welding electrode after a stage of microwave drying from 30°C to 100°C at a rate of 12°C / min for 15 minutes;

[0028] The third stage of microwave drying: adjust the microwave output power to 4kW, and keep the electrode dried by the second stage...

Embodiment 3

[0030] The method for this microwave drying electrode, its concrete steps are as follows:

[0031] First, the welding rod with a moisture content of 4wt.% is suspended on the transmission chain by an electromagnet, and the welding rod is transported to the microwave cavity at a speed of 0.5m / min for three-stage microwave drying;

[0032] The first stage of microwave drying: start the dehumidification system, and control the air volume of the dehumidification fan at 2400cm 3 / h, adjust the microwave output power to 3kW, heat the electrode from room temperature to 30°C at a rate of 8°C / min, and keep it warm for 15min;

[0033] The second stage of microwave drying: adjust the microwave output power to 10kW, and raise the temperature of the welding electrode after a stage of microwave drying from 80°C to 180°C at a rate of 15°C / min for 10 minutes;

[0034] The third stage of microwave drying: adjust the microwave output power to 3kW, and keep the welding electrode dried by the se...

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Abstract

The invention relates to a method of drying a welding electrode through microwave and belongs to the technical field of application of microwave heating technology. The method comprises the following steps: firstly the welding electrode with the moisture content of 2-5 wt. % is hanged on a transferring chain through an electromagnet; the welding electrode is transferred into a microwave cavity body to be treated with three-section microwave drying at the speed of 0.5-3 m / min; the first section microwave drying lies in staring a dehumidification system, regulating the microwave output power at 2-4 kW, and heating the welding electrode from room temperature to 30-80 DEG C at the speed of 5-10 DEG C / min; the second section microwave drying lies in regulating the microwave output power at 4-10 kW, and heating the welding electrode from 30-80 DEG C to 100-180 DEG C at the speed of 10-15 DEG C / min; the third section microwave drying lies in regulating the microwave output power at 2-4 kW and continuing to keep the temperature for 10-15 min to obtain a welding electrode with the moisture content less than 1 wt. %. The method effectively avoids the formation of male and female faces after the welding electrode is dried.

Description

technical field [0001] The invention relates to a microwave drying method for welding electrodes, belonging to the technical field of microwave heating technology application. Background technique [0002] As metal welding materials, welding electrodes are widely used in nuclear industry, aerospace, metallurgy, construction, machinery and equipment and other industries. The welding rod is mainly composed of two parts, the welding core and the coating, which is made by uniformly and centripetally pressing the coating on the metal welding core. Since the coating of the newly produced welding electrode usually contains a certain amount of water, the overall strength of the electrode is often insufficient, and the coating is easy to fall off; at the same time, if the coating of the welding electrode contains too much water, splashing often occurs during use, which affects the welding quality. Therefore, the welding rod must be dried. [0003] At present, the drying methods of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B15/00F26B23/08F26B25/00
Inventor 刘秉国王宝宝彭金辉张利波左勇刚周俊文胡途
Owner KUNMING UNIV OF SCI & TECH
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