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Sheet heating multifunctional and small infrared composite box type heating furnace and method

A heating furnace and box-type technology, applied in the field of hot stamping, can solve the problems of high construction cost, unsuitable heating speed, large floor area, etc., to ensure temperature uniformity, shorten heating time, and shorten floor space Effect

Pending Publication Date: 2019-08-13
山东威奥智能装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The ceramic rollers of the coated plate heated by the roller hearth furnace are prone to "nodules", resulting in high maintenance and replacement costs; the heating speed is slow, and the production efficiency needs to be increased by increasing the length of the furnace body, resulting in a large footprint and high construction costs; the heating process path Poor controllability
[0006] Traditional multi-layer box furnace has slow heating speed, low efficiency and uncontrollable heating process path
[0007] The rapid heating methods such as induction heating and self-resistance heating have poor temperature uniformity when heating special-shaped thin plates, and it is easy to produce plate shape defects; form an oxidation protection layer

Method used

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  • Sheet heating multifunctional and small infrared composite box type heating furnace and method
  • Sheet heating multifunctional and small infrared composite box type heating furnace and method
  • Sheet heating multifunctional and small infrared composite box type heating furnace and method

Examples

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Effect test

example 1

[0073] The present invention adopts the infrared heating furnace of the upper-mounted infrared composite box-type heating furnace to heat ordinary low-carbon steel. Figure 9 280mm×200mm×2mm multi-gradient I-shaped ultra-low carbon steel plate ( Figure 9 ) at 288kw / m 2The output power, the temperature change when the heating height is 4.5cm, and the distance between the infrared lamps is 2mm. Such as Figure 10 shown. The steel plates are mutually symmetrical, and 1 / 4 of the steel plate is selected as the measurement range. (Position iv point is the temperature measurement of the center of the I-shaped plate (point 4), position i point is the 50×50 inflection point temperature of the I-shaped plate (point 1), and position iii point is the edge temperature of the I-shaped plate (point 3) ).

example 2

[0075] The infrared heating furnace of the top-mounted infrared composite box-type heating furnace is also used to heat ordinary low-carbon steel, the heating distance is still 4.5cm, and the output power of the short-wave infrared lamp is adjusted to 360kw / m 2 , the thickness and shape of the steel plate remain unchanged, and the temperature changes in four places are measured. (Position iv point is the center temperature measurement curve of the I-shaped plate (point 4), position iii point is the edge temperature (point 3), position i point is the inflection point temperature of 50×50 (point 1), position ii point is 50×25 The inflection point temperature (point 2)). Such as Figure 11 shown.

example 3

[0077] The infrared heating furnace of the upper-mounted infrared composite box-type heating furnace is used to heat ordinary low-carbon steel. The thickness of the low-carbon steel of the same material becomes 1mm, the heating height is adjusted to 7cm, and the distance between the lamp tubes is adjusted to 1.5mm. , at this time the output power of the short-wave infrared lamp is 288kw / m 2 , use the same single-layer infrared heating furnace to heat the steel plate, the shape of the steel plate remains unchanged, and measure the temperature changes at four places. (The position iv point is the temperature measurement curve (point 4) of the center point, the position ii point is the inflection point temperature (point 2) of 50×25 of the I-shaped plate, and the position v point is the temperature of the center point of the back side of the I-shaped plate ( point 5), the position i point is the inflection point temperature of 50×50 (point 1)). Such as Figure 12 shown.

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Abstract

The invention belongs to the technical field of hot punching forming, and discloses a sheet heating multifunctional and small infrared composite box type heating furnace and a method. An upper arrangement manner or a lower arrangement manner is adopted in an infrared heating layer; meanwhile, lifting regulation and control can be conducted on the height of a heating furnace body; and the output power, the radiation distance and the modulator tube distance of an infrared heating pipe can be collaboratively regulated and controlled, and real-time adjustment on the blank heating temperature, theheating speed and temperature field uniformity is achieved. The composite heating box type furnace combines many advantages of small occupied space, low cost, good technology flexibility, high energyefficiency and the like, and a heating manner extremely has application prospects for future sheet heating.

Description

technical field [0001] The invention belongs to the technical field of hot stamping forming, and in particular relates to a multifunctional and miniaturized infrared composite box-type heating furnace for thin plate heating and a method thereof. Background technique [0002] Currently, the closest prior art: [0003] Hot stamping forming technology is a new forming technology to improve the plastic forming ability of high-strength steel plates, ensure the dimensional accuracy of stamping parts and improve the strength level of stamping parts. It has become a popular technology in the high-strength steel auto parts manufacturing industry. The billet heating of the hot stamping process adopts roller hearth furnace and multi-layer resistance heating box furnace. Among them, the main advantage of the roller hearth furnace is that it is suitable for uniform heating of blanks of different shapes after laser cutting and blanking, and the heating production efficiency is high, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B17/00F27D11/00H05B3/62
CPCF27B17/00F27D11/00H05B3/62
Inventor 姚圣杰陈龙杨绪剑赵洪运
Owner 山东威奥智能装备有限公司
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