Thermoforming furnace dew point control system
A technology of control system and heating furnace, applied in heat treatment process control, manufacturing tools, heat treatment equipment, etc., can solve problems such as hydrogen absorption, failure, and deterioration of mechanical properties, so as to optimize other properties, actively optimize the surface, and avoid mechanical properties worsening effect
Active Publication Date: 2018-02-09
艾伯纳工业炉(太仓)有限公司
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Problems solved by technology
[0003] However, the martensite structure is easy to absorb hydrogen and cause defects. Hydrogen elements can fill the voids of this structure, deteriorating the mechanical properties of the structure and causing permanent failure (hydrogen embrittlement)
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Embodiment 1
[0014] Embodiment one: see attached figure 1 shown. A thermoforming heating furnace dew point control system for adjusting the dew point in a thermoforming heating furnace 1 of parts, comprising a dew point detection device 2 , a controller 3 and an air injection device 4 .
[0015] The dew point detection device 2 is used to detect the dew point of the atmosphere at the position where the detection point is located in real time. At least one position in the thermoforming heating furnace 1 needs to be detected, and usually a plurality of different positions need to be detected. Therefore, the dew point detection device 2 has several detection points, and the detection points are located in the thermoforming heating furnace 1 . For example, in this embodiment, three detection points of the dew point detection device 2 are distributed along the length direction of the thermoforming heating furnace 1, respectively located at the front, middle and rear of the thermoforming heatin...
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Abstract
The invention relates to a dew-point control system of a thermal-forming heating furnace. The dew-point control system comprises dew-point detection devices provided with a plurality of detection points and used for detecting a dew point in the thermal-forming heating furnace and outputting a detection signal respectively, a controller capable of setting the target dew points of areas where the detection points of the various dew-point detection devices are located, and receiving the detection signals to generate control signals, and a gas injection device used for injecting a gas in the areas where the detection points of the various dew-point detection devices are located and dynamically adjusting the components of the injected gas according to the control signals. The dew-point control system disclosed by the invention is capable of correspondingly adjusting the dew points in the thermal-forming heating furnace in real time, and the problems of mechanical property deterioration and the like caused due to that hydrogen element is absorbed by parts during a thermal-forming machining process can be effectively avoided through dew-point control on a furnace atmosphere; meanwhile, the other performances of the parts can be optimized by controlling the components of the injected gas, and the dew-point control system especially has a quite positive effect on surface optimization for coating elements.
Description
technical field [0001] The invention belongs to the field of industrial heat treatment and relates to a control system for controlling the dew point of each area in a thermoforming heating furnace. Background technique [0002] In the field of industrial heat treatment, the thermoforming process involves heating the part to the austenitizing temperature (>700°C), forming it in a water-cooled mold and quenching. This process can make the parts form martensitic structure, and the tensile strength can reach 1500MPa, and the elongation can be greater than 5%. [0003] However, the martensitic structure is easy to absorb hydrogen and cause defects. Hydrogen elements can fill the voids of this structure, deteriorating the mechanical properties of the structure and causing permanent failure (hydrogen embrittlement). At high thermoforming temperatures, the high humidity inside the thermoforming furnace atmosphere can cause hydrogen to be absorbed into the part (especially coated...
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IPC IPC(8): C21D1/76C21D11/00
CPCC21D1/76C21D11/00
Inventor 罗伯特·艾伯纳
Owner 艾伯纳工业炉(太仓)有限公司