A quenching device for aluminum alloy heat treatment
A quenching device and aluminum alloy technology, which is applied in the field of cooling and quenching devices, can solve problems such as stress defects, uneven cooling, and long processing cycles, and achieve the effects of reducing residual stress, optimizing effects, and accelerating cooling speed
Active Publication Date: 2017-09-26
SUZHOU MINGZHI TECH
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Problems solved by technology
This method adopts a separate spray quenching. Due to the use of a cooling quenching platform device, the spray is from bottom to top, which affects the surface finish during the process, resulting in only selective spray cooling in partial directions, which is prone to stress defects due to uneven cooling; At the same time, this method needs to be combined with natural aging treatment, and the treatment period is long
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Embodiment 1
[0022] Embodiment one: see figure 1 and figure 2 As shown, a quenching device for aluminum alloy heat treatment includes a quenching tank 7, the quenching tank 7 is arranged on a trolley body 9, and a casting fixing device and a control system are arranged in the quenching tank 7, which cooperate with the quenching tank 7 , a spray cooling device and an air cooling device are provided, and the spray cooling device includes spray nozzles 1 arranged on both sides of the casting fixing device distributed in the vertical direction, a compressed air pipeline distributor 2 communicated with the spray nozzle 1 and The water pipe 3, the outlet of the spray nozzle 1 faces the casting 4; the air cooling device is composed of a plurality of air cooling devices arranged on the quenching tank, and each air cooling device is formed by an axial flow facing the casting fixing device. The blower fan 6 and the wind guide cover 5 arranged around the axial fan 6 are formed.
[0023] In this em...
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Abstract
The invention discloses a quenching device for aluminum alloy heat treatment, which comprises a quenching tank, a casting fixing device arranged in the quenching tank, and a control system, and is characterized in that a spray cooling device and an air cooling device are provided, and the spray cooling device includes Spray nozzles arranged on both sides of the casting fixing device distributed along the vertical direction, compressed air pipeline distributors and water pipes communicated with the spray nozzles, the outlet of the spray nozzles is facing the casting fixing device; the air cooling device It consists of a plurality of air-cooling devices arranged on the quenching tank, and each air-cooling device is composed of an axial flow fan arranged directly against the casting fixing device and a wind guide cover arranged around the axial flow fan. The invention can carry out air cooling and mist cooling and quenching at the same time, accelerate the cooling speed, reduce the residual stress of the casting, and make the casting reach a uniform supersaturated solid solution state.
Description
technical field [0001] The invention relates to a quenching device for heat treatment, in particular to a device for cooling and quenching after heat treatment and solid solution of aluminum alloy cylinder castings. Background technique [0002] With the trend of lightweight in the automobile industry, more and more engine blocks are made of aluminum alloy castings. Usually, high-strength aluminum alloy castings need to undergo T6 heat treatment, that is, water quenching treatment after solid solution heating and artificial aging treatment. However, the aluminum alloy cylinder block castings of automobile engines, whose structure is the aluminum alloy cylinder block with inlaid cylinder liner, if the T6 heat treatment process is still used, will cause high internal stress during solution quenching, so that the aluminum alloy cylinder block Castings have defects such as quenching cracks. [0003] In order to solve the above problems, there are two methods in the prior art, ...
Claims
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IPC IPC(8): C21D1/667C21D1/63C21D9/40
Inventor 吴伟强
Owner SUZHOU MINGZHI TECH