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Multistage roller jacket combination inner-cooling large-sized back-up roll

A technology for supporting rolls and roll sleeves, applied in the direction of rolls, metal rolling, manufacturing tools, etc., can solve the problems of reducing production costs, reducing the height of a single roll sleeve, and complicated repairing processes, etc., to improve the service cycle, reduce production costs, The effect of increasing relative friction

Inactive Publication Date: 2008-10-15
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of the existing technology such as expensive large support rolls, complex repair process and unsatisfactory repair effect, the present invention provides a multi-section roller sleeve combined with internal cooling type large support roll. The roll core of the invention can be used repeatedly. The roller sleeve greatly reduces the height of a single roller sleeve, which is suitable for mass production of ring rolling machines or forging production, thus greatly reducing production costs

Method used

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  • Multistage roller jacket combination inner-cooling large-sized back-up roll
  • Multistage roller jacket combination inner-cooling large-sized back-up roll
  • Multistage roller jacket combination inner-cooling large-sized back-up roll

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Embodiment 1

[0017] figure 1 It is an embodiment disclosed by the present invention. The mandrel 1 and the multi-segment roll sleeve 2 are thermally assembled and nested together. The multi-segment roll sleeve 2 is composed of 10 roll sleeves with the same size. There are 45 cooling water grooves 6 parallel to the axis, and the outer surfaces of both ends of the roll body are processed with annular communication grooves 5, and the cooling water grooves 6 communicate with the annular communication grooves 5. The cooling water groove 6 and the annular communication groove 5 form a closed chamber with the roller sleeve 2 fitted on the mandrel 1 . Two water diversion channels 4 are respectively processed inside the two ends of the mandrel 1 roll body. One end of the water diversion channel 4 communicates with the annular communication groove 5, and the other end communicates with the water inlet channel 3 and the water outlet channel 7 at both ends of the mandrel 1 respectively. Water channel...

Embodiment 2

[0021] Image 6 It is another embodiment disclosed by the present invention, the mandrel 1 and the integral roller sleeve 8 are thermally assembled and nested together, and 45 cooling water grooves 6 parallel to the axis are processed on the outer surface of the mandrel 1 roll body, and the two ends of the roll body An annular communication groove 5 is processed on the outer surface. The cooling water groove 6 and the annular communication groove 5 form a closed chamber with the integral roller sleeve 8 fitted on the mandrel 1 . Two water diversion channels 4 are respectively processed inside the two ends of the mandrel 1 roll body. One end of the water diversion channel 4 communicates with the annular communication groove 5, and the other end communicates with the water inlet channel 3 and the water outlet channel 7 at both ends of the mandrel 1 respectively. The cooling water enters the annular communication groove 5 and the cooling water tank 6 from the water diversion cha...

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Abstract

The invention discloses a multi-section roll sleeve combined inner-cold type large-scale support roller, which is characterized in that: a core shaft (1) and a multi-section roll sleeve (2) are inserted and sleeved together by hot assembly, a cooling water tank (6) and an annular communicating tank (5) are processed on the external surface of the roll body of the core shaft (1), the cooling water tank (6), the annular communicating tank (5) and the multi-section roll sleeve (2) which is sleeved on the core shaft (1) form a closed cavity; a water leading channel (4) is processed in the both ends of the roll body of the core shaft (1), one end of the water leading channel (4) communicates with the annular communicating tank (5), the other end respectively communicates with a water inlet channel (3) or a water outlet channel (7) arranged at the both ends of the core shaft (1). As the cooling water tank is processed on the surface of the roll core (1) of the invention to carry out cooling of the multi-section roll sleeve (2), the relative friction between the roll sleeve and the roll core is greatly increased. The multi-section roll sleeve (2) reduces the height of the single roll sleeve, so as to be applicable to batch production or forging production by a ring rolling machine. When the thickness of the roll sleeve is reduced to be out of service, the multi-section roll sleeve (2) is replaced and the roll core (1) can be used repeatedly, thus reducing the production cost.

Description

technical field [0001] The invention relates to the technical field of metallurgical machinery, in particular to a multi-section roller sleeve combined internal cooling large support roller. Background technique [0002] With the development of modern strip mills towards large scale, high speed and automation, the corresponding requirements for large back-up rolls of strip mills are getting higher and higher. The large backup rolls used in strip mills should meet the following rolling characteristics: 1. High compressive strength and good rigidity, enough to withstand high rolling force and peak load; 2. Good toughness, 3. The working layer of the roll body has good wear resistance and fatigue resistance to reduce roll consumption; 4. The working layer of the roll body has uniform structure and hardness, making the whole The roll surface has uniform wear resistance; 5. It has good corrosion resistance to resist the corrosion of high temperature and lubricating or cooling me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B29/00B21B27/08
Inventor 孙登月付云峰许石民严衍玲
Owner YANSHAN UNIV