Unlock instant, AI-driven research and patent intelligence for your innovation.

Plastic mold steel plate and production method thereof

A plastic mold and production method technology, applied in the field of material preparation, can solve the problems of high cost, poor surface and core tissue uniformity, long process, etc., and achieve the effects of high efficiency, improved tissue uniformity, and simple process flow

Active Publication Date: 2021-10-19
INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing plastic mold steel plates either adopt long-process and high-cost production methods to improve uniformity, such as adding die-cast steel ingots, forging, quenching, etc., or the structure uniformity of the surface and core is very poor, and the cross-section Rockwell hardness difference above 4HRC

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
  • Plastic mold steel plate and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0028] This embodiment provides a production method of a plastic mold steel plate, and correspondingly provides a plastic mold steel plate prepared by the production method.

[0029] Specifically, in the production method of this embodiment, the steel billet is sequentially processed through the first heating process-the second heating process-rolling process-post-rolling cooling process-cross-stacking self-tempering process to prepare the steel plate. Among them, the steel slab is preferably a continuous casting slab, but not limited thereto. Next, each process will be described in detail.

[0030] (1) The first heating process

[0031] Send the billet into the heating furnace for three-stage heating, that is, heat in the order of preheating section, heating section and soaking section, the temperature in the preheating section is 850-950°C, and the residence time in the preheating section is ≥60min. The temperature of the heating section is 1100-1220°C, the temperature of ...

no. 2 approach

[0066] This embodiment also provides a plastic mold steel plate and a production method thereof. As a further optimization of the foregoing first embodiment, the difference between this embodiment and the foregoing first embodiment mainly lies in: the post-rolling cooling process. In the following, only this difference will be introduced, and the rest of the same parts will not be repeated.

[0067] First, in the post-rolling cooling process of the aforementioned first embodiment, the steel plate is naturally air-cooled on the cooling bed to T F . And different from this, in the present embodiment, the described post-rolling cooling process is:

[0068] First, move the steel plate obtained from the final rolling to the cooling bed for natural air cooling, that is, without any intervention, until the temperature of the upper surface of the steel plate drops to T A ; where, B s +15℃≤T A ≤B s +35°C, specifically preferably T A =B s +30°C; B s is the temperature at the be...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a plastic mold steel plate and a production method thereof. The production method comprises the following steps that a steel billet is fed into a heating furnace for three-section heating, wherein the temperature of a preheating section is 850-950 DEG C, the retention time of the preheating section is greater than or equal to 60 minutes, the temperature of a heating section is 1100-1220 DEG C, the temperature of a soaking section is 1210-1250 DEG C, and the in-furnace time is greater than or equal to 240 minutes; the steel billet is reheated, and the temperature of a soaking zone is 1140-1170 DEG C; the steel billet is rolled into a steel plate, the initial rolling temperature ranges from 1060 DEG C to 1140 DEG C, and the final rolling temperature ranges from 980 DEG C to 1050 DEG C; the steel plate is moved to a cooling bed to be air-cooled to TF, and TF is greater than or equal to Bf-50 DEG C and less than or equal to Bf-20 DEG C; the steel plate and a ferrite pearlite steel plate with the temperature of 450-550 DEG C are stacked in a crossed mode, the steel plate is self-tempered during stacking till the temperature of the steel plate is reduced to TM again, and TM is larger than or equal to Bf-50 DEG C and less than or equal to Bf-20 DEG C; and then unstacking is conducted.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and relates to a production method of a plastic mold steel plate and a plastic mold steel plate prepared by the production method. Background technique [0002] With the rapid development of petrochemical technology, plastic production has increased rapidly. A large number of plastic products need to be molded in the production process, and the mold material is a key factor affecting the quality, performance and service life of the mold. [0003] Plastic mold materials are mainly mold steel, and mold steel is mainly processed into various mold frame components such as gating system, cavity, and core. Due to the complex structure, the plastic material is in contact with the cavity surface of the mold frame, which is prone to wear and impact. Therefore, it is required that the cross-sectional structure and mechanical properties of the mold steel plate be uniform and not deformed durin...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/44C21D1/18C21D6/00C21D8/02
CPCC22C38/02C22C38/04C22C38/44C21D1/18C21D6/004C21D6/005C21D6/008C21D8/0205C21D8/0226C21D8/0247C21D2211/005C21D2211/009
Inventor 曲锦波镇凡邵春娟杨浩
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE