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

Compounding technology for bimetallic roller sleeve, bimetallic compound roller sleeve and roller

A composite process and bimetallic technology, which is applied in the field of casting rolls and rolls, can solve problems such as pores, slag inclusions, looseness and delamination, looseness, and large differences in thermophysical properties at the joints.

Inactive Publication Date: 2018-12-14
HUNAN 3T NEW MATERIAL
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to the large difference in thermal physical properties of the two composite layers of the composite roller sleeve, when the traditional casting process is used, defects such as pores, slag inclusions, looseness, and delamination are prone to appear at the junction of the two composite layers, reducing the composite layer. The strength and composite effect make the composite roll sleeve loose or even break when it undertakes high-strength and long-term rolling work

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
  • Compounding technology for bimetallic roller sleeve, bimetallic compound roller sleeve and roller
  • Compounding technology for bimetallic roller sleeve, bimetallic compound roller sleeve and roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Please refer to figure 1 , a composite process of a bimetallic roller sleeve in this embodiment, the bimetallic roller sleeve includes an outer jacket 1, an inner jacket 2 and a middle transition layer 3, and the outer jacket 1, the middle transition layer 3 and the inner jacket 2 are sequentially set from outside to inside While forming a whole, the composite process includes the following steps:

[0035] Step 1: Process the outer sleeve 1, the inner sleeve 2 and the intermediate transition layer 3 according to the predetermined size, weld and seal the first end of the inner sleeve 2 with the first sealing end cap 21, and use a plastic container 4 to hold a certain amount of distilled water and place it in the inner sleeve 2, the second end of the inner sleeve 2 is welded and sealed with the second sealing end cap 22.

[0036] Step 2: Put the intermediate transition layer 3 and the outer jacket 1 on the inner jacket 2 in turn, then put the double metal roller jacket i...

Embodiment 2

[0047] Please refer to figure 1 , a composite process of a bimetallic roller sleeve in this embodiment, the bimetallic roller sleeve includes an outer jacket 1 , an intermediate transition layer 3 and an inner jacket 2 . Outer jacket 1 is high alloy steel with high hardness and wear resistance, outer diameter Ф390mm, length 650mm, thickness 65mm; intermediate transition layer 3 is made of red copper, thickness is 0.3mm; inner jacket 2 is ordinary low carbon steel seamless pipe, 20 # Seamless pipe, outer diameter Ф270mm, length 900mm, thickness 25mm.

[0048] Process the inner hole of the jacket 1, the inner diameter is Ф270mm, and the surface roughness of the inner hole is Ra3.2.

[0049] The outer circle of the inner sleeve 2 is processed, the outer circle size is Ф268mm, the inner diameter of the inner hole is Ф220mm, and the surface roughness is Ra3.2.

[0050] The first end of the inner sleeve 2 is welded and sealed, the thickness of the first sealing end cover 21 is 50m...

Embodiment 3

[0061] Please refer to figure 1 , the embodiment of the present invention provides a composite process of a bimetallic roller sleeve, the bimetallic roller sleeve includes an outer jacket 1 , an intermediate transition layer 3 and an inner jacket 2 . Outer jacket 1 is high alloy steel with high hardness and wear resistance, outer diameter Ф370mm, length 700mm, thickness 50mm; intermediate transition layer 3 is made of red copper, thickness 0.25mm; inner jacket 2 is ordinary low carbon steel seamless pipe, 20 # Seamless pipe, outer diameter Ф270mm, length 900mm, thickness 20mm.

[0062] Process the inner hole of the jacket 1, the inner diameter is Ф270mm, and the surface roughness of the inner hole is Ra3.2;

[0063] Process the outer circle of the inner sleeve 2, the outer circle size is Ф268.1mm, the inner diameter of the inner hole is Ф220mm, and the surface roughness is Ra1.6;

[0064] Carry out welding sealing on the first end of the inner sleeve 2, the thickness of the ...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a compounding technology for a bimetallic roller sleeve. The compounding technology comprises the following steps that firstly, the first end of an inner sleeve is welded and sealed with a first sealing end cover, a plastic container contains a certain amount of distilled water and is put into the inner sleeve, and the second end of the inner sleeve is welded and sealed with a second sealing end cover; secondly, an intermediate transition layer and an outer sleeve are sequentially installed on the inner sleeve in a sleeving mode, the bimetallic roller sleeve obtained after sleeving installation is put into a vacuum heating furnace to be subjected to heat treatment, the temperature is slowly increased to 1,070-1,120 DEG C, and then heat preservation is conducted for2-4 hours; and thirdly, the bimetallic roller sleeve is repeatedly put into a heating furnace to be subjected to tempering 2-3 times, the tempering temperature is 500-600 DEG C, the bimetallic rollersleeve is taken out of the furnace to be cooled after tempering, and the first sealing end cover and the second sealing end cover at the two ends are cut off. Distilled water in the inner sleeve can be vaporized along with increasing of the temperature, the inner wall of the inner sleeve generates external tension through gas expansion, the intermediate transition layer is diffused to the outer sleeve and the inner sleeve after being molten and then permeates into the outer sleeve and the inner sleeve, and the three parts form a firm entirety.

Description

technical field [0001] The invention relates to the technical field of casting and rolling rolls, in particular to a composite process of a bimetallic roll sleeve, a bimetallic composite roll sleeve using the bimetallic roll sleeve in the composite process, and a roll comprising the bimetallic composite roll sleeve. Background technique [0002] In recent decades, the iron and steel industry at home and abroad has been developing new technologies around saving energy, improving production efficiency, and improving product quality, so as to achieve the goal of long-term and continuous energy saving and quality improvement. Iron and steel casting and rolling technology, as a near-net-shape casting technology that directly casts the shape, size and quality as close as possible to the final product, has been the dream goal of metallurgists and materials scientists for more than a century. [0003] Since the 1950s, the United States, Japan, Germany, France, South Korea, China 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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21B27/03
CPCB21B27/035B23P15/00
Inventor 向勇李聚良曾麟芳胡勇
Owner HUNAN 3T NEW MATERIAL