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Roller subzero treatment device

A technology of cryogenic treatment and roll, applied in the field of roll production, can solve the problems of short life, nitrogen cannot be circulated well, and high failure rate, and achieve the effect of promoting movement, uniform gas distribution, and improving cryogenic quality.

Pending Publication Date: 2019-03-22
JIANGSU RUNFU MECHANICAL ROLL MFG
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The existing problems are: (1) The fan or blower has the problems of high failure rate and short life under low temperature and severe working conditions; (2) Nitrogen cannot circulate well

Method used

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] A kind of roll 10 cryogenic treatment device of the present invention, as Figure 1-4 As shown, it includes a cryogenic box 1 arranged on the ground and a settling pipe 2 arranged horizontally underground, and the cryogenic box 1 is level with the ground to facilitate the transport of the roll 10 into the cryogenic box 1 . The cryogenic box 1 is connected to the precipitation pipe 2, and the cold air sinks to the bottom of the cryogenic box 1. The temperature at the bottom is too low compared to the temperature at the upper part, which cannot ensure that the roll 10 is cooled evenly. Set up ...

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Abstract

The invention discloses a roller subzero treatment device comprising a precipitation pipe and a blowing device. Nitrogen precipitated at the bottom is blown into a subzero box again, use of liquid nitrogen is reduced, and meanwhile movement of gas in the subzero box is also facilitated. A shielding cover is arranged, so that nitrogen is guided while liquid nitrogen direct injection is prevented, and nitrogen is dispersed more evenly. In addition, a driving device drives a gas inlet barrel to rotate, nitrogen is guided to a roller through the gas inlet barrel, the roller is further cooled evenly, and subzero quality is improved. Meanwhile an impeller is arranged on the outer wall of the gas inlet barrel and is rotated with driving force of the gas inlet barrel, movement of gas in the subzero box is facilitated, gas is distributed more evenly, in addition additional power is not needed, and cost is lowered.

Description

technical field [0001] The invention relates to the field of roll production, and particularly designs a roll cryogenic treatment device. Background technique [0002] As a supplementary process of ordinary heat treatment, cryogenic treatment is a process in which materials are placed in a certain low temperature environment and processed according to a certain process. Research and application of surface cryogenic treatment can effectively improve the mechanical properties of materials such as wear resistance, dimensional stability, strength, and toughness, thereby improving product quality, prolonging service life, and ultimately reducing production costs. The United States and other developed countries have industrialized this technology as early as the 1960s and 1970s. In recent years, some large and small domestic enterprises have added cryogenic treatment to their production lines. [0003] However, the use of ultra-low temperature liquid nitrogen (-196°C) as the cool...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D6/04C21D9/38
CPCC21D6/04C21D9/38
Inventor 蔡友根
Owner JIANGSU RUNFU MECHANICAL ROLL MFG
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