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Manufacturing technology of composite roll sleeve, and equipment

A composite roll and manufacturing process technology, applied in the field of metal pressure processing, can solve problems such as the inability to stably ensure the quality of the composite interface, the inability to manufacture the inner layer of the steel material, the difficulty of solid surface oxidation, etc., and achieve fine grains and crystalline structure. The effect of excellent, good mechanical properties

Inactive Publication Date: 2017-06-13
丹阳恒庆复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] At present, most of the composite roller ring manufacturing processes developed at home and abroad are manufactured by centrifugal composite casting method. Due to the limitation of the manufacturing process, the inner layer material of the manufactured composite roller sleeve is nodular cast iron, and it is still impossible to manufacture the inner layer of steel material.
The inlay casting process mostly uses the inner material of the composite roller sleeve to be preheated to 300-800°C in a heating furnace, put it into the molding sand, and then pour the composite material of the outer layer of the roller sleeve into the box. The main disadvantages of this process are: Heating in a heating furnace, due to the long heating time, the heated parts are easy to oxidize, although the solid surface can be protected from oxidation by coating the solid surface with a protective agent, it is very difficult to completely prevent the oxidation of the solid surface
In addition, since the preheated parts are taken out from the heating furnace and poured, the time in between is generally not easy to control, resulting in a large change in the actual temperature of the preheated parts before compounding, and the quality of the composite interface cannot be guaranteed stably
However, the high-temperature metal liquid is used to wash the solid part for a long time, and the heating efficiency is very low, which not only wastes a large amount of high-temperature metal, but also causes unnecessary waste of energy and materials.

Method used

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  • Manufacturing technology of composite roll sleeve, and equipment
  • Manufacturing technology of composite roll sleeve, and equipment
  • Manufacturing technology of composite roll sleeve, and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: in figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 Among them, the equipment has a gantry-type regional directional solidification lifting device 16, a lifting platform 17 is installed on the gantry-type regional directional solidification lifting device 6, an electromagnetic induction heater 8 is installed on the lifting platform 17, and the lifting motor 14 rotates and lifts The screw 15 or hydraulic equipment drives the lifting table 17 to move up and down at the set speed, and the electromagnetic induction power control cabinet 19 is installed on the side of the directional solidification lifting equipment 16 in the gantry type area. The two output ends of the electromagnetic induction power control cabinet 19 are cooled by water. The cable 20 is connected to the two ends of the electromagnetic induction heater 8, and there is a base bracket at the bottom of the directional solidification lifting device 16 in the gantry type area...

Embodiment 2

[0039] Example 2: In figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 in figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6Among them, the equipment has a gantry-type regional directional solidification lifting device 16, a lifting platform 17 is installed on the gantry-type regional directional solidification lifting device 6, an electromagnetic induction heater 8 is installed on the lifting platform 17, and the lifting motor 14 rotates and lifts The screw 15 or hydraulic equipment drives the lifting table 17 to move up and down at the set speed, and the electromagnetic induction power control cabinet 19 is installed on the side of the directional solidification lifting equipment 16 in the gantry type area. The two output ends of the electromagnetic induction power control cabinet 19 are cooled by water. The cable 20 is connected to the two ends of the electromagnetic induction heater 8, and there is a base bracket at the bottom of the directio...

Embodiment 3

[0042] Example 3: In figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 Among them, the equipment has a gantry-type regional directional solidification lifting device 16, a lifting platform 17 is installed on the gantry-type regional directional solidification lifting device 6, an electromagnetic induction heater 8 is installed on the lifting platform 17, and the lifting motor 14 rotates and lifts The screw 15 or hydraulic equipment drives the lifting table 17 to move up and down at the set speed, and the electromagnetic induction power control cabinet 19 is installed on the side of the directional solidification lifting equipment 16 in the gantry type area. The two output ends of the electromagnetic induction power control cabinet 19 are cooled by water. The cable 20 is connected to the two ends of the electromagnetic induction heater 8, and there is a base bracket at the bottom of the directional solidification lifting device 16 in the gantry type area, a...

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PUM

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Abstract

The invention discloses a manufacturing technology of a composite roll sleeve, and equipment. The manufacturing technology comprises the steps of integrally heating a thick-wall hollow steel tube core rod mounted in a combined water-cooling crystallizer to be 800-1000 DEG C by an induction heater, pouring a roll shaft working layer melt, continuing to heat for 10-50min, starting a lifting device to lift the heater at a certain speed, stopping lifting when the heater is lifted to a heat preservation ring by 5-15min, continuing to heat for 10-50min, feeding a feeder head, and supplying water to cool for 30min-24h after heating stop. The composite roll sleeve manufactured by the technology is few in controllable technology parameter; an interface of a composite layer is easy to control; the technology is simple; the efficiency is high; power consumption is low; the composite layer has no component segregation; the service life is long; the defects of structure segregation of a centrifugal method and poor performance and high cost of a traditional embedding method are overcome.

Description

technical field [0001] The invention belongs to the technical field of metal pressure processing, and in particular relates to a manufacturing process and equipment for a high-performance composite roll sleeve, which is suitable for manufacturing composite rolls in the steel rolling industry. Background technique [0002] The roll is known as the "mother of steel". It is a tool for plastically deforming metal materials in the rolling production of steel, aluminum, copper and other metals. Rolling is an indispensable key component and the most important bulk consumption component, and its consumption cost is about 5% to 15% of the steel rolling production cost. If factors such as production downtime, reduced production and increased equipment maintenance due to roll consumption are considered, the proportion of production costs will be even higher. [0003] Rolling mill is an important equipment in metal pressure processing and production, and it is a remarkable symbol to me...

Claims

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Application Information

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IPC IPC(8): B22D19/16B22D27/04
CPCB22D19/16B22D19/0081B22D27/045
Inventor 丁家伟丁刚耿德英鹿薇薇鹿策施孟达陈志和朱坚
Owner 丹阳恒庆复合材料科技有限公司
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