Centrifugal pump impeller repairs a method

Shandong Hairui Zhonglian Pump Industry Co. , ltd. The centrifugal pump that is a major produces manufacturer. When type selecting of client centrifugal pump, manufacturer of my company water pump can provide the before-sales service such as price of centrifugal pump model, centrifugal pump, in order to offer client reference, and manufacturer of my water pump can provide the service of product of custom-built pump industry for the client. This product information is the knowledge that repairs a method about centrifugal pump impeller:

The sort of centrifugal pump is very much, what pledge according to material is different, applied situation is different also, in-house impeller structure is different also, have cast-iron vane wheel commonly, not anticorrosive; Qualitative impeller of stainless steel impeller and copper, reach plastic impeller to wait anti-corrosive impeller, to impeller damaged, metallic impeller this how repair, what rehabilitate method is there? Centrifugal pumpBecause suffer silt, of current erode, of medium corrode, water pump impeller can wear away gradually, corrode. Blade surface often forms groove or striation, or suffer empty corrode to destroy, hole of blade occurrence alveolate, perforative even. If blade is cast when contain stomatic, sand holes or slag inclusion, the surface after moving allows easy occurrence stoma, interstitial even. The rehabilitate of water pump impeller has a variety of methods, the method that impeller cavitation repairs is more, if use besmear of composite material of ARC high polymer to protect, pulverous spray (solder) , epoxy resin besmear is protected and composite material of balata, nylon is repaired etc, still have use stainless steel to enchase, v. Use besmear of material of epoxy resin high polymer to protect have construction method simple, price is low wait for an advantage, and the effect is good. Deserve to compare through optimizing, specific aim ground adjusts the function index of material, those who show high strength stick relay and the tenacity that draw blow energy, have the very high intensity that fights cavitation, abrasion to destroy and hardness.
Common rehabilitate method has centrifugal pump vane wheel:
1, gas welding mends a way: Put impeller on charcoal fire to heat 400-500 ℃ , stannum is hanged in filling solder place, reoccupy oxygen one acetylene blaze goes to brass silk frit in the groove that needs repair or hole, after solder is over, move go charcoal fire, use asbestine board to enclothe heat preservation, make blade slow and cooling, lest produce crackle. After solder fills, undertake machining nap by original contour line with the file.
2, cupreous silk mends a way: To the cavitation of pinhole shape, want its hole to did not join only piece, silk of usable red copper hits person pinhole, with file file light can. Should use first before processing burnish machine is cleared blade surface ferruginous, contamination, use oxygen next one acetylene blaze is blown except air hole inside sundry, again to the fill inside aperture the red copper silk of proper degree of finish, use knock of pointed hand hammer at the same time, red copper silk extruding, crowded fact arrives in aperture, latter make the same score with file file.
3, v mends a way: Before v, with place of grinder burnish empty corrode, clear of the surface ferruginous, sundry, till show shining metallic noumenon, in order to make v layer and blade union more firm. After clearing, put impeller into charcoal fire to undertake warm-up. Use and blade material is qualitative identical welding rod or stainless steel welding rod, otherwise desquamate, not damaged, keep dry, purify moisture, lest v is medium generation is stomatic. When v, want to adopt solder going there and back, also can adopt statified across presses solder, every time v quantity wants little, prevent concentration of blade be heated, generation stress is out of shape. After filling solder, with burnish opportunity is right blade undertakes nap. The impeller after repair, must have static balance test. Lest impeller high speed is rotational when, as a result of added mass lopsided and generation makes water pump happening oscillatory from mental efforts.
4, epoxy resin mends a way: By cooperate to compare, take right amount epoxy resin, second orderly benzene of 2 amine, adjacent 2 fourth ester, acetone puts 2 formic acid in glass service to mix, mix divide evenly. The sticky consistency of glue sticky agent notices when agitate, right amount add acetone dosage. The epoxy resin that has made up is better gone inside 20-30min. Brush with abb dip in take epoxy resin, brush sand holes of besmear lamina surface, stomatic place, brush Tu Shi to squeeze the bleb among a sand holes, stoma gently with pointed awl, besmear divide evenly besmears as far as possible solid, use scraper at the same time gently strickle squeezing ramming. After waiting for solidify of epoxy resin 1-2h, brush besmear again 2 ～ 3. When besmear is brushed after, be sure to make blade surface slick smooth-going. After besmear brushs an end, impeller is put below the environment with 20-30 ℃ and inferior relative humidity, slowly conserve 48h. Wait for epoxy resin after complete solidify, use a file or burnish machine what go up to impeller contour line and facing is raised undertake nap.
5, crash steel mends a way: Crash steel is stick for glue pulpy before a kind of solidify receive repair an agent, the intensity after solidify tall, hardness is not not tall, contractive, rustily, the place fill such as the stoma that suits to wait for metallic ability to appear character to steel, iron, crackle, sand holes and repair, have stronger bind result. Before repairing, will draft the float rust all round mend, contamination to wait clear clean, coarse change. Take out crash steel the colloid in plastic pipe, will the core inside colloid and cortical the material of two kinds of different color uses a hand fast and sufficient rub up is become monochromatic (2min) of about 1 ～ , achieve calorific softness had better. Want in crash steel colloid caky before, exert oneself to do sth. cement arrives mend, exert oneself to do sth. along with colloid solidify process (hand or tool) for many times squeezing ramming, enhance the adherent power of glue and lamina. After crash steel is sclerotic, make the same score with file file.
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