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Sinking roller shaft sleeve and manufacturing method thereof

A manufacturing method and technology of sinking rolls, applied in coating, metal material coating process, hot-dip galvanizing process, etc., can solve the problems of continuous production of galvanizing line, low strength of powder metallurgy bushing, and poor corrosion resistance of molten zinc and other problems, to achieve the effect of not easy to break, great practical value, and thick corrosion resistance layer of molten zinc

Inactive Publication Date: 2018-03-20
王茂庭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shaft sleeve made of this material and manufacturing process has low material utilization rate, poor resistance to molten zinc corrosion, poor wear resistance, and short life span, generally only 10 to 15 days
Another material is a cobalt-based alloy, which is sintered by powder metallurgy. Although the bushing made by this method has improved corrosion resistance to molten zinc, it is difficult to machine and the production cost is high. Low strength, easy to break the shaft sleeve during the production process of galvanized sheet, which seriously affects the continuous production of galvanized line

Method used

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  • Sinking roller shaft sleeve and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Shaft structure such as figure 1 As shown: the shaft sleeve is composed of a stainless steel substrate 1 and a cobalt-based laser cladding layer 2. The cobalt-based laser cladding layer 2 covers the stainless steel substrate 1. The stainless steel substrate 1 is welded by an inner sleeve 11 and a plug 12. , 3 is the welding port.

[0016] The process steps are as follows:

[0017] 1. Machining stainless steel inner sleeve 11 with stainless steel pipe and machining plug 12 with stainless steel plate.

[0018] 2. Weld the stainless steel inner sleeve 11 and the plug 12 together.

[0019] 3. Machining, leaving 2~3mm laser cladding allowance.

[0020] 4. Laser cladding, on the outer circle of the stainless steel substrate 1, first use cobalt-based powder with better cladding performance as a primer, and then cladding cobalt-based powder with good wear resistance and molten zinc corrosion resistance to the designed size of the shaft sleeve And leave the machine to add a ...

Embodiment 2

[0023] Shaft structure such as figure 1 As shown: the shaft sleeve is composed of a stainless steel substrate 1 and a cobalt-based laser cladding layer 2. The cobalt-based laser cladding layer 2 covers the stainless steel substrate 1. The stainless steel substrate 1 is welded by an inner sleeve 11 and a plug 12. , 3 is the welding port.

[0024] The process steps are as follows:

[0025] 1. Machining stainless steel inner sleeve 11 with stainless steel pipe and machining plug 12 with stainless steel plate.

[0026] 2. Weld the stainless steel inner sleeve 11 and the plug 12 together.

[0027] 3. Machining, leaving 2~3mm laser cladding allowance.

[0028] 4. Laser cladding, on the outer circle of the stainless steel substrate 1, first use cobalt-based powder with better cladding performance as a primer, and then cladding cobalt-based powder with good wear resistance and molten zinc corrosion resistance to the designed size of the shaft sleeve And leave the machine to add a ...

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Abstract

The invention provides a sinking roller shaft sleeve. The sinking roller shaft sleeve consists of two parts of a stainless steel basal body 1 and a cobalt base laser cladding layer 2; and the cobalt base laser cladding layer 2 covers the stainless steel basal body 1. The invention further provides a manufacturing method of the sinking roller shaft sleeve; and the manufacturing method is characterized by comprising the following procedures: (1) the stainless steel basal body 1 is machined; (2) the machining is performed; (3) laser cladding: a bottoming layer is clad firstly on an outer circle of the stainless steel basal body 1; then, a function layer is clad; and the laser cladding has the following process parameters: the laser power is 3000-5000 W; the light spot diameter is 2-5 mm; andthe scanning speed is 2-10 mm / s; and (4) the machining is performed to reach a designed size. The sinking roller shaft sleeve and the manufacturing method thereof have the following advantages: the material utilization rate is high; a molten zinc corrosion resisting layer is thick, and the thickness can reach above 2 mm; the strength of the shaft sleeve is high; and the manufacturing method is high in adaptability, convenient to operate, high in standardization, lower in production cost and great in practical value.

Description

technical field [0001] The invention relates to the manufacturing technology of the sinker roller sleeve. Background technique [0002] During the continuous hot-dip galvanizing production of steel strip, the steel strip passes through the sinking roller immersed in the zinc solution to change the direction of movement, that is, from entering the zinc pot for galvanizing to being out of the zinc pot, and the galvanized layer is solidified and cooled. The sinking roller, which rotates with the movement of the strip, is supported on the fixed frame by the sleeves on both sides, and the sleeves act as sliding bearings. [0003] Since the bushing and the sinking roller are in molten zinc, severe molten zinc corrosion usually occurs. At the same time, since the bushing and the bushing are always in a state of relative motion during work, the working life of the bushing is relatively short. short. At present, there are mainly two types of shaft sleeves used in the production of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C23C24/10
CPCC23C2/003C23C2/06C23C24/103
Inventor 王茂庭
Owner 王茂庭