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A rotary drum device and method for preparing zinc alloy shot peening

A technology of zinc alloy and shot peening, which is applied in the field of zinc alloy shot peening in a rotary device, which can solve the problems of difficult control of zinc alloy shot size, small production capacity, and heavy workload, and overcome the difficulty of controlling particle size , uniform particle size, and the effect of improving productivity

Active Publication Date: 2015-09-09
连云港倍特超微粉有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problems of using the dropper method to produce zinc alloy shot peening include: (1) The molten liquid drips through the small inner hole of the dropper. When the dropping speed is too fast, a continuous filamentous zinc alloy will be formed instead of a spherical zinc alloy shot. Therefore, the production capacity of this method is too small to be mass-produced on a large scale.
(2) In addition to the size of the zinc alloy shot is related to the diameter of the dropper, it is also related to the molten liquid level and pressure in the storage tank. The molten liquid level will gradually decrease during the reproduction process, so the size of the zinc alloy shot varies greatly during the production process. Large, that is to say, the particle size of zinc alloy pellets is not easy to control in this method
(3) This method belongs to intermittent operation, and the loading and unloading of the zinc alloy molten liquid and the cleaning of the leaky bucket are frequently repeated, and the workload is large and the labor intensity is large.

Method used

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  • A rotary drum device and method for preparing zinc alloy shot peening
  • A rotary drum device and method for preparing zinc alloy shot peening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The outer diameter of the drum granulator is Φ377mm, the wall thickness is 12mm, and the length is 6m. The width of the built-in strip baffle is 30mm and the length is 5.8m. Turn on the power supply of the drum granulator 4, and adjust the frequency conversion to make the drum rotating speed be 60rpm. Open the cooling water circulating pump and the valve on the cooling water spray pipe, so that the cooling water is evenly sprayed onto the outer wall of the rotating drum granulator 4, and the cooling water flow rate is controlled at 5m 3 / h; open the nitrogen valve, and adjust the size of the valve to make the nitrogen flow rate 1m 3 / h.

[0061] Add zinc and alloy elements to the intermediate frequency electric furnace, turn on the intermediate frequency electric furnace to start melting, and transfer the molten liquid into the tundish. Slowly tilt the tundish 1 so that the zinc alloy melt 2 is slowly introduced into the hopper 3 . Zinc alloy molten liquid is divide...

Embodiment 2

[0063] The outer diameter of the drum granulator is Φ450mm, the wall thickness is 14mm, and the length is 8m. The width of the built-in strip baffle is 50mm and the length is 7.5m. Turn on the power supply of the drum granulator 4, and adjust the frequency conversion to make the drum rotating speed be 100rpm. Open the cooling water circulating pump and the valve on the cooling water spray pipe, so that the cooling water is evenly sprayed onto the outer wall of the rotating drum granulator 4, and the cooling water flow rate is controlled at 8m 3 / h; open the nitrogen valve, and adjust the size of the valve so that the nitrogen flow rate is 1.5m 3 / h.

[0064] Add zinc and alloy elements to the intermediate frequency electric furnace, turn on the intermediate frequency electric furnace to start melting, and transfer the molten liquid into the tundish. Slowly tilt the tundish 1 so that the zinc alloy melt 2 is slowly introduced into the hopper 3 . Zinc alloy molten liquid is ...

Embodiment 3

[0066] The outer diameter of the drum granulator is Φ550mm, the wall thickness is 16mm, and the length is 8m. The width of the built-in strip baffle is 60mm and the length is 7.5m. Turn on the power supply of the drum granulator 4, and adjust the frequency conversion to make the drum rotating speed be 150rpm. Open the cooling water circulation pump and the valve on the cooling water spray pipe, so that the cooling water can be evenly sprayed onto the outer wall of the rotating drum granulator 4, and the cooling water flow rate is controlled at 10m 3 / h; open the nitrogen valve, and adjust the size of the valve so that the nitrogen flow rate is 3.0m 3 / h.

[0067] Add zinc and alloy elements to the intermediate frequency electric furnace, turn on the intermediate frequency electric furnace to start melting, and transfer the molten liquid into the tundish. Slowly tilt the tundish 1 so that the zinc alloy melt 2 is slowly introduced into the hopper 3 . Zinc alloy molten liqui...

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Abstract

The invention relates to a rotary tube type device and a method for preparing zinc alloy blasting shots. Through the effects of a rotary tube in fast rotating and a built-in strip-shaped baffle plate of the rotary tube, zinc alloy melt liquid is cut into fine particles, then, the fine particles are shrunk and solidified into spherical particles through the heat exchange with the container wall in the rotary tube, and in addition, the particle size of products can be changed through regulating the rotating speed of the rotary tube. The device has the characteristics of continuous operation and high production capacity and is suitable for large-scale and batch production; the particle size of products has high regulatability, and the uniformity of the particle size is good; and a production device can easily realize the automation, the work intensity is low, the production efficiency is high, and wide market prospects are realized.

Description

technical field [0001] The invention belongs to the technical field of metal surface strengthening treatment, and in particular relates to a drum-type device for preparing zinc alloy shot peening and a method thereof. Background technique [0002] In the field of metal casting, metal surface treatment is an essential process and plays an important role in improving product quality. The metal surface treatment of die-casting, die-casting light alloy and stainless steel casting products includes the removal of burrs, rust removal and polishing, etc., and shot peening (also known as shot blasting) is one of the commonly used methods. Existing spray (throwing) shot comprises steel shot, stainless steel shot, aluminum alloy shot and zinc alloy shot at present, selects shot peening of different materials according to the material hardness of processed casting. For light alloy die castings such as aluminum alloys, zinc alloys, and manganese alloys used as auto parts, steel shots a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/08
Inventor 孟令光胡永其赵风云
Owner 连云港倍特超微粉有限公司