CN202326387U

CN202326387U - Metal hydraulic pump impeller with alloy layer clad on surface

Info

Publication number: CN202326387U
Application number: CN2011204307824U
Authority: CN
Inventors: 王建升
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-03
Filing date: 2011-11-03
Publication date: 2012-07-11
Anticipated expiration: 2021-11-03

Abstract

The utility model relates to a metal hydraulic pump impeller with an alloy layer clad on surface, and is used for effectively solving the problems of abrasion on an overflow component, such as a hydraulic pump impeller and the like, and short service life. The technical scheme of the utility model is as follows: the metal hydraulic pump impeller comprises metal blades, a rotary shaft and an impeller body, wherein the impeller body is arranged on the rotary shaft, spiral blades are uniformly distributed on the circumference of the impeller body, a hardening alloy layer is clad on the surfaces of the spiral blades, and the thickness of the hardening alloy is 10-60 microns. The metal hydraulic pump impeller with the alloy layer clad on the surface, disclosed by the utility model, has the advantages of simple, novel and unique structure, easiness in manufacturing, low cost, high hardness, wear resistance, long service life and no environment pollution.

Description

The metal water pump impeller of surface cladding alloy-layer

Technical field

The utility model relates to machinery, particularly the metal water pump impeller of a kind of surface cladding alloy-layer of electrical spark cladding deposition surface alloy.

Background technique

All the time, water pump vane flow passage components abrasions, cavitation erosion infringement problem continue perplexing vast pumping station operation managerial department, and it is particularly outstanding in China Huanghe valley with the Huanghe water to be that water source vast high-lift drawn in the yellow irrigation water supply pumping plant this problem.Water pump vane is contained husky water abration, cavitation or both actings in conjunction cause blade surface or outer rim local large-area polishing scratch and hole groove to occur, makes in the water of blade performance deterioration gradually, causes directly that pump efficiency descends, energy consumption increases.Simultaneously; The rigid mechanical failure of impeller that abrasion, cavitation cause also makes the repair cycle of water pump and working life shorten; Annual because of reasons such as unit operation decrease in efficiency, energy unit consumption raising, the increases of repair and maintenance expense; Bring very big economic burden all for vast pumping plant managerial department, seriously hindered the normal performance of pumping plant benefit and the sustainable sound development of irrigated area, place and water-supplying unit.

During water pump was made at present, main flow passage components such as impeller were selected material performance of over current component of water pump such as stainless steel, alloyed steel, alloy cast steel, alloy cast iron, wear resisting cast iron.Around solving water pump blade abrasion, cavitation infringement problem; In recent years; Anti-abrasion, cavitation material and technology through actual verification mainly are anti-abrasion hard-surface coating material and preparation process; Promptly on traditional parent material of flow passage components such as water pump vane, use various preparation technology of coating, prepare the good cladding material of one deck anti-erosion performance.Be used for the case-hardened method of water pump vane coating of high molecular polymer (comprising epoxy carborundum coating and polyurethane coating etc.), surface overlaying high-abrasive material, surface heat spraying (comprising oxyacetylene spraying, plasma spraying, electric arc spraying and supersonic spray coating) wear heat-resistant material, cladding alloy layer etc. are arranged.The anti-abrasion coating that macromolecule anti-abrasion preparation technology of coating forms and the adhesive strength of mother metal are not enough, and anti-cavitation performance is not good; Surface overlaying high-abrasive material cost is high, and has the problem of surface Machining difficulty; Sandblast is generally adopted in surface heat spraying pretreatment, and environmental pollution is arranged, and the coating processing difficulties belongs to mechanical bond between coating and the mother metal, and adhesive strength is low, and the coating fatiguability peels off; The cladding alloy layer is because large-scale laser involves great expense, and the heat of generation is big, causes leaf tissue distortion etc. easily.Therefore, improvement on the metal water pump impeller and innovation are the essential problems that solves.

Summary of the invention

To above-mentioned situation, for overcoming the existing technology defective, the purpose of the utility model just provides a kind of metal water pump impeller of surface cladding alloy-layer, can effectively solve the abrasion of flow passage components such as water pump vane and the problem that increases the service life.

The technological scheme that the utility model solves is, comprises metal blade, rotating shaft and wheel body, and wheel body is contained in the rotating shaft, and the wheel body periphery has the spiral blade that is uniformly distributed with, and the spiral blade surface cladding has hard alloy layer, the thickness 10-60 μ m of hard alloy layer.

The utility model is simple in structure, and is novel unique, is prone to generate, and cost is low, and hardness is big, and is wear-resisting, long service life, non-environmental-pollution.

Description of drawings

Fig. 1 is the structural front view (blade partly cut-away) of the utility model.

Fig. 2 is the blade of the utility model and the sectional view of hardener layer segment.

Embodiment

Elaborate below in conjunction with the embodiment of accompanying drawing to the utility model.

By Fig. 1, shown in 2, the utility model comprises metal blade, rotating shaft and wheel body, and wheel body 2 is contained in the rotating shaft 1, and the wheel body periphery has the spiral blade 3 that is uniformly distributed with, and the spiral blade surface cladding has hard alloy layer 4.

The thickness 10-60 μ m of described hard alloy layer, the hardness of hard alloy layer is 60～70HRC.

The utility model is when producing; With electrode material cemented carbide (like WC, TiC etc.) electrode bar; As working electrode (anode), produce sparkover between the water pump vane that makes it in the argon gas and be deposited (negative electrode), the energy that sparkover produces; Electrode material is shifted (cladding) to water pump blade surface, constitute the hard alloy layer of cladding deposition.

As required, the utility model can adopt the electrical spark cladding to obtain at the water pump vane outer surface of stainless steel, alloyed steel, alloy cast steel, alloy cast iron or wear resisting cast iron>the thick hard alloy layer of 10～60 μ m, the utility model is simple in structure; Novel unique, be easy to produce, cost is low; Wide application, long service life, the 2-3 that can increase the service life is doubly; Non-environmental-pollution has good economic and social benefit.

Claims

1. the metal water pump impeller of a surface cladding alloy-layer; Comprise metal blade, rotating shaft and wheel body, it is characterized in that wheel body (2) is contained in the rotating shaft (1); The wheel body periphery has the spiral blade (3) that is uniformly distributed with, and the spiral blade surface cladding has hard alloy layer (4).

2. the metal water pump impeller of surface cladding alloy-layer according to claim 1 is characterized in that, the thickness 10-60 μ m of described hard alloy layer, and the hardness of hard alloy layer is 60～70HRC.