CN103695616B - Improve the heat preservation method that special thick quenched nickelclad enters water temp - Google Patents

Abstract

The invention discloses and a kind ofly improve the heat preservation method that special thick quenched nickelclad enters water temp, in steel plate handling process, use woven asbesto to carry out rapid Cover, solve quenched nickelclad and hang out this problem too fast of temperature drop in process, special thick quenched nickelclad can be made to enter water temp and at least improve more than 50 DEG C, this has larger meaning for raising steel plate hardening capacity, reduction cost of alloy.

Description

Improve the heat preservation method that special thick quenched nickelclad enters water temp

Technical field

The invention belongs to super-thick steel plate technical field of heat treatment, be specifically related to a kind ofly improve the heat preservation method that special thick quenched nickelclad enters water temp.

Technical background

At present, exterior mechanical stove is the conventional type of furnace of special heavy plate quenching, the principal feature of this kind of type of furnace after steel plate heating, uses handling utensil to put it in water cool, and steel plate come out of the stove to enter this link of water relate to multiple operation at least want 5-10 minute consuming time, be heated to 900 DEG C of high-temperature steel plates cool 5 minutes its temperature in atmosphere and will be down to less than 800 DEG C, this will make quenched nickelclad enter the water temp water-cooled through hardening effect that causes on the low side to have a greatly reduced quality, negative impact for avoiding this problem to cause in production process often takes the method for adding a large amount of alloying element to improve steel plate hardening capacity, but solve temperature drop this problem too fast in quenched nickelclad tapping process, be necessary to take necessary Insulation to steel plate of coming out of the stove.

Summary of the invention

For the problems referred to above, the object of this invention is to provide and a kind ofly improve the heat preservation method that special thick quenched nickelclad enters water temp, this technique can make special thick quenched nickelclad enter water temp at least to improve more than 50 DEG C, can improve steel plate hardening capacity, reduce cost of alloy.

For achieving the above object, the technical scheme that the present invention takes is:

A kind ofly improve the heat preservation method that special thick quenched nickelclad enters water temp ,comprise the following steps:

A. prepare without sharp woven asbesto, specification is width 1m, thickness 1m, monovolume weight 50kg;

B. woven asbesto is divided into L equal portions according to steel plate physical length L before hanging out by steel plate along its length, and specification is: length x width=L × 1m, as length 6m steel plate need prepare woven asbesto 6 pieces;

C. the woven asbesto blocked neatly is put to charging and discharging machine arms end;

D. steel plate hangs out in process, when arms front end enter in stove by steel plate delivery come out of the stove after, with utmost dispatch, woven asbesto is covered to steel plate and has come out of the stove partly (woven asbesto length direction covers steel plate width direction), steel plate is come out of the stove and is covered woven asbesto and carries out simultaneously, non-interference, to greatest extent shorten steel plate come out of the stove after the aerial exposed time;

E. the woven asbesto covering surface of steel plate is separated after entering quenching pond with steel plate automatically, and steel plate directly enters water rapid cooling, and woven asbesto is because the less nature of proportion is floating to the water surface.

The present invention be improve special thick quenched nickelclad enter water temp, in steel plate handling process, use woven asbesto to carry out rapid Cover, solve quenched nickelclad and hang out this problem too fast of temperature drop in process, special thick quenched nickelclad can be made to enter water temp and at least improve more than 50 DEG C, this has larger meaning for raising steel plate hardening capacity, reduction cost of alloy.

Embodiment

A kind ofly improve the heat preservation method that special thick quenched nickelclad enters water temp ,comprise the following steps:

A. prepare without sharp woven asbesto, specification is width 1m, thickness 1m, monovolume weight 50kg;

B. woven asbesto is divided into L equal portions according to steel plate physical length L before hanging out by steel plate along its length, and specification is: length x width=L × 1m, as length 6m steel plate need prepare woven asbesto 6 pieces;

C. the woven asbesto blocked neatly is put to charging and discharging machine arms end;

D. steel plate hangs out in process, when arms front end enter in stove by steel plate delivery come out of the stove after, with utmost dispatch, woven asbesto is covered to steel plate and has come out of the stove partly (woven asbesto length direction covers steel plate width direction), steel plate is come out of the stove and is covered woven asbesto and carries out simultaneously, non-interference, to greatest extent shorten steel plate come out of the stove after the aerial exposed time;

E. the woven asbesto covering surface of steel plate is separated after entering quenching pond with steel plate automatically, and steel plate directly enters water rapid cooling, and woven asbesto is because the less nature of proportion is floating to the water surface.

The result finally obtained shows: after the invention process, in steel plate handling process, use woven asbesto to carry out rapid Cover, solve quenched nickelclad and hang out this problem too fast of temperature drop in process, special thick quenched nickelclad can be made to enter water temp and at least improve more than 50 DEG C, this has larger meaning for raising steel plate hardening capacity, reduction cost of alloy.

Claims (1)

1. improve the heat preservation method that special thick quenched nickelclad enters water temp, it is characterized in that this heat preservation method comprises the following steps:

A. prepare without sharp woven asbesto, specification is width 1m, thickness 1m, monovolume weight 50kg;

B. woven asbesto is divided into 6 equal portions according to steel plate physical length 6m before hanging out by steel plate along its length;

C. the woven asbesto blocked neatly is put to charging and discharging machine arms end;

D. steel plate hangs out in process, after arms front end enters and steel plate delivery come out of the stove in stove, woven asbesto is covered to steel plate with utmost dispatch and come out of the stove part, steel plate is come out of the stove and is covered woven asbesto and carries out simultaneously, non-interference, to greatest extent shorten steel plate come out of the stove after the aerial exposed time;

E. the woven asbesto covering surface of steel plate is separated after entering quenching pond with steel plate automatically, and steel plate directly enters water rapid cooling, and woven asbesto is because the less nature of proportion is floating to the water surface.