Novel full-hardening cold-rolling working roller heat treatment process
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A cold-rolled work roll, full hardening technology, used in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as easy damage of cold-rolled work rolls, shorten heating time, avoid bending or cracking, and reduce temperature differences. Effect
Pending Publication Date: 2020-04-17
WUXI YIBAO MACHINERY EQUIP CO LTD
View PDF0 Cites 1 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] Aiming at the deficiencies of the existing technology, the present invention provides a new type of heat treatment process for fully hardened cold-rolled work ro
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Example Embodiment
[0030] Example one
[0031] Such as figure 1 As shown, take 46*790 work roll as an example:
[0032] A new type of heat treatment process for fully hardened cold rolling work rolls, including the following heat treatment processing steps:
[0033] S1. Place the workpiece on the heating equipment, clamp and hoist it for preheating, perform 400℃ preheating, 600℃ preheating, and 800℃ preheating successively. The preheating time of the workpiece at 400℃ is 3.5 hours and at 600℃. The preheating time is 2.5 hours, and the preheating time at 800°C is 1.5 hours;
[0034] S2, the preheated workpiece is hoisted into a 1120±10℃ high temperature quenching environment for heating, and the high temperature quenching heating time is 75 minutes;
[0035] S3. Then the workpiece is hoisted into a constant temperature quenching environment for constant temperature quenching treatment. The constant temperature quenching environment temperature is 180°C, and the constant temperature quenching time is 10 mi...
Example Embodiment
[0041] Example two
[0042] Such as figure 2 As shown, take 55*855 work roll as an example:
[0043] A new type of heat treatment process for fully hardened cold rolling work rolls, including the following heat treatment processing steps:
[0044] S1. Place the workpiece on the heating equipment, clamp and hoist it for preheating, perform 400℃ preheating, 600℃ preheating, and 800℃ preheating successively. The preheating time of the workpiece at 400℃ is 3.5 hours and at 600℃. The preheating time is 2.5 hours, and the preheating time at 800°C is 1.5 hours;
[0045] S2, the preheated workpiece is hoisted into a 1160±10℃ high temperature quenching environment for heating, and the high temperature quenching heating time is 95 minutes;
[0046] S3. Then the workpiece is hoisted into a constant temperature quenching environment for constant temperature quenching treatment, the constant temperature quenching environment temperature is 190 ℃, and the constant temperature quenching time is 10.5...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention relates to the technical field of full-hardening cold-rolling working roller heat treatment processing, and discloses a novel full-hardening cold-rolling working roller heat treatment process. Preheating treatment is performed on a workpiece first, then high-temperature quenching and heating are performed at 1080-1180 DEG C, and then the workpiece is hung into a constant-temperaturequenching environment to be subjected to constant-temperature quenching treatment. By means of the novel full-hardening cold-rolling working roller heat treatment process, heating and heat preservingare performed at each stage with the purposes of ensuring that the workpiece moves to a higher-temperature environment and finally reaches a quenching temperature after internal and external metal texture reaches a set temperature, reducing the deformation of the workpiece to a certain extent, shortening the heating time of the workpiece at the quenching temperature, improving the heat treatment efficiency of the workpiece, improving the metallographic phase texture distribution compactness, thermal shock resistance and abrasive resistance of a working roller, ensuring that hanging and air-cooling are performed after the parts, with different sizes, of the cold-rolling working roller reach the same temperature, effectively reducing the deformation of the cold-rolling working roller and preventing the working roller from being bent or broken.
Description
technical field [0001] The invention relates to the technical field of heat treatment processing of fully hardened cold rolling work rolls, in particular to a novel heat treatment process of fully hardened cold rolling work rolls. Background technique [0002] Cold-rolled work rolls can be divided into cold-rolled stainless steel strips, cold-rolled copper strips, and cold-rolled special alloy steel strips according to the rolled products. The new fully hardened cold-rolled work rolls are suitable for rolling super-hard For thin and special stainless steel, copper strips and special strips, the highest hardness of rolled plates can reach above HV580. When the cold-rolled work roll is rolled and rolled, the surface of the roll body needs to bear large contact stress, alternating stress and friction force, which makes the traditional cold-rolled work roll prone to thermal cracks during the rolling process, which may easily cause the work roll to explode. rolls, spalling, and ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more