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Weaving Welding Forming Method of Large Circulation Pump Impeller

A forming method and circulation pump technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of complex processing technology, low cost, and high precision of casting impellers, and achieve simple structure, short production cycle, and high welding quality Effect

Active Publication Date: 2015-12-09
SHENYANG SANKE HYDRAULIC MACHINERY MANUFACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a large-scale circulating pump impeller weaving welding forming method, which solves the problems of complex processing technology and large error of casting impeller in the prior art, and the present invention has high precision and low cost

Method used

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  • Weaving Welding Forming Method of Large Circulation Pump Impeller
  • Weaving Welding Forming Method of Large Circulation Pump Impeller
  • Weaving Welding Forming Method of Large Circulation Pump Impeller

Examples

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Effect test

Embodiment

[0040] The impeller takes five blades as an example, as shown in the figure, and the specific steps are as follows.

[0041] The first step is to make models of the impeller front cover, blades and impeller rear cover respectively, and cast the castings.

[0042] In the second step, the surface of the flow-through part of the front and rear cover plates is finished to the finished product size, the outer surface and the end face are rough-machined, and a 5-8mm finishing allowance is reserved.

[0043] The third step is to polish the working surface and the back of the blade, and use the space model made by the contour line to check the curvature of the polished shape line, and determine the reference points A, B, C, and D of the four corners of the blade. Point A is the blade on the front cover. Point B is the placement position of the blade at the outlet of the front cover; point C is the placement position of the blade at the suction inlet of the rear cover; point D is the p...

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Abstract

The invention relates to a large-sized circulating pump impeller forming method through swing welding. The method comprises the following steps: the geometry of an impeller is disintegrated into blades, a front cover plates and rear cover plates; inverted grooves are formed in the front cover plates and the rear cover plates of the blades; a flow passing surface of each front cover plate and each rear cover plate are connected with each other by adopting a welding method through the blades. According to the large-sized circulating pump impeller forming method through swing welding, the surface of a flow passing part of the impeller is smooth and clean, the water power size is accurate, a dynamic balance test and a static balance test of the impeller are accurate, the water pump efficiency is high, the product quality is excellent, the impeller is welded according to a welding technology during welding, the deformation of the impeller is small after welding, dimensional requirements of drawings can be met, the welding quality is high without defects, and national flaw detection quality standard requirements can be met.

Description

technical field [0001] The invention relates to an impeller manufacturing method and a forming method thereof, in particular to a large-scale circulating pump impeller weaving welding forming method, which belongs to the technical field of material processing engineering. Background technique [0002] In the manufacture of various parts of the pump, the impeller is an important part in the manufacture of the pump. The impeller has two forms of casting and forging. The forging is processed by a five-axis machining center, but it is difficult to grind the cast impeller with a large number of blades and a large wrap angle. The surface roughness of the flow-passing part of the impeller is uneven, and the local roughness of the blade is low, which affects the pump efficiency and product quality; and because the wooden mold structure of the overall cast impeller is complex, the wooden mold deforms greatly, and the casting impeller produces cumulative errors, and the casting size i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23K31/02
Inventor 胡小军吕桂云刘华军
Owner SHENYANG SANKE HYDRAULIC MACHINERY MANUFACTORY
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