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

Method for manufacturing anticorrosive wear-resistant titaniumalloy impeller for centrifugal blower

A manufacturing method and technology for fan impellers, which are applied to mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of frequent off-line cycles, inability to meet the converter steelmaking gas recovery system, and short life, and reduce labor intensity. and maintenance costs

Inactive Publication Date: 2008-11-19
LUOYANG SUNRUI TI PRECISION CASTING
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the current problems of short service life of steel fan impellers, frequent off-line cycles, and inability to meet the requirements of the converter steelmaking gas recovery system, the purpose of the present invention is to provide a method for manufacturing a corrosion-resistant and wear-resistant titanium alloy centrifugal fan impeller, which can improve the performance of fan impellers. Wear resistance of the impeller to increase the service life of the fan impeller, reduce maintenance times, reduce maintenance costs, and improve economic benefits

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0018] The titanium alloy fan impeller casting is cast in a vacuum casting furnace by using a machine-added graphite model; the impeller casting is machined according to the design requirements; the titanium fan impeller blade after vacuum casting is first pretreated with corundum sand, and then alkaline Hydroxide 50-70%, chelating agent 10-30%, trihydroxybenzene 15-20%, the hot solution of the mixture of three surfactants activates the surface of the processed titanium alloy impeller blade to make the titanium alloy impeller A porous activation layer with good adhesion is formed on the surface of the blade substrate; then the sintered 200μm wear-resistant material is thermally sprayed on the surface of the blade at a supersonic speed of Mach 3-6, and the weight ratio of the abrasive composition is: WC 7, Co 2 , Cr 0.5.

Embodiment approach 2

[0020] The titanium alloy fan impeller casting is cast in a vacuum casting furnace by using a machine-added graphite model; the impeller casting is machined according to the design requirements; the titanium fan impeller blade after vacuum casting is first pretreated with corundum sand, and then alkaline Hydroxide 50-70%, chelating agent 10-30%, trihydroxybenzene 15-20%, the hot solution of the mixture of three surfactants activates the surface of the processed titanium alloy impeller blade to make the titanium alloy impeller A porous activation layer with good adhesion is formed on the surface of the blade substrate; then the sintered wear-resistant material with a size of 310 μm is thermally sprayed on the surface of the blade at a supersonic speed of Mach 3-6, and the weight ratio of the abrasive composition is: WC 8, Co 3 , Cr 1.

Embodiment approach 3

[0022] The titanium alloy fan impeller casting is cast in a vacuum casting furnace by using a machine-added graphite model; the impeller casting is machined according to the design requirements; the titanium fan impeller blade after vacuum casting is first pretreated with corundum sand, and then alkaline Hydroxide 50-70%, chelating agent 10-30%, trihydroxybenzene 15-20%, the hot solution of the mixture of three surfactants activates the surface of the processed titanium alloy impeller blade to make the titanium alloy impeller A porous activation layer with good adhesion is formed on the surface of the blade substrate; then the sintered 400μm wear-resistant material is thermally sprayed on the surface of the blade at a supersonic speed of Mach 3-6, and the weight ratio of the abrasive composition is: WC 12, Co 6 , Cr 1.5.

[0023] The performance index of the embodiment

[0024] Sample No.

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
particle sizeaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

One kind corrosion-resisting, the wear-resisting titanium alloy centrifugal air blower impeller manufacture method, its characteristic lies in: the method for making impeller of the air blower, use machine-made graphite model to cast titanium alloy air blower impeller casting in the vacuum foundry furnace; According to design request to machine-process the impeller. First chose polygon alundum wheel of 60-180 mesh to carry on coarse processing; then use basic hydroxide 50%-70%, chelating agent 10-30% and trihydroxy benzene 15-20%, three kind of surfactants mixture hot solution to make activation processing to the titanium alloy impeller blade ; Finally sprays WC series metal ceramic powder onto the blade of the said impeller by using supersonic spraying method. At the same time in the spraying process the inert gas protection is carried out to the part around the blade to the contamination by gas to the impeller.

Description

Technical field: [0001] The invention relates to the technical field of application of titanium-based alloy materials, in particular to a method for manufacturing a corrosion-resistant and wear-resistant titanium alloy centrifugal fan impeller. Background technique: [0002] Centrifugal fan impeller is the core component of converter steelmaking exhaust gas recovery fan device. Its function is to collect the exhaust gas through the negative pressure at the fan inlet, filter and reprocess, and recycle the exhaust gas. Its working environment is: water spraying in an acidic and humid environment, the washing of gas and dust mixed particles that appear in the converter steelmaking process, the dust particle size is 40μm, the gas dust content is 150mg / l, and its main component is dust; CO: 50 ~80%, N 2 , CO 2 , SO 2 : 12-19%. [0003] The front and rear cover plates of the original fan impeller are made of 35MoV material, and the blades are made of 15MnV material; the impell...

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 Patents(China)
IPC IPC(8): F04D29/02F04D29/30
Inventor 杨学东李春标
Owner LUOYANG SUNRUI TI PRECISION CASTING