Method for casting cabin casts of aerogenerators

A technology for wind power generators and castings, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of easy deformation, large residual stress, low casting yield, etc. non-deformable effect

Active Publication Date: 2010-01-06
宁波日星铸业有限公司
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the sand casting process of ordinary parts is adopted for the castings of the wind turbine nacelle, but the weight of the castings of the wind turbine nacelle is about 7.2 tons, and the dimensions of the castings are 2480mm×2800mm×1860mm. Higher, longer length, while the sand box rigidity, sand strengt

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for casting cabin casts of aerogenerators
  • Method for casting cabin casts of aerogenerators

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] The following further describes the present invention with reference to the drawings and specific implementation examples:

[0018] A casting method of a wind turbine nacelle casting, which includes the following steps:

[0019] 1) Mold manufacturing, mold design and parting surface determination. The mold adopts three-box shape, the model uses Northeast Korean pine as the material, and the bottom frame of the model is welded with a thick square tube of 200mm×200mm×10mm, and The length direction is made of a whole square tube, mainly to prevent the mold from deforming and improve the overall performance of the mold. Lay 2 layers of wooden boards and 1 layer of plywood with a thickness of not less than 20mm on the template;

[0020] 2) Sand mold manufacturing. Set the inner gate II2 in the main bearing round hole on the bottom surface of the casting cavity. The number of inner gate II2 is 4. The inner gate II 2 is a drape gate with a thickness of 10mm. This is beneficial to w...

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

No PUM Login to view more

Abstract

The invention discloses a method for casting cabin casts of aerogenerators, comprising the steps of mould manufacture, the manufacture of sand moulds and moulding by pouring. During the manufacture of sand moulds, a bottom pouring type pouring system is adopted; an ingate II (2) is arranged in a round hole of a main bearing on the bottom surface of a cast mould cavity; an outer sprue is a quantitative ladle stopper pouring sprue; the ratio of cross-sectional areas of a sprue I to a side runner to a sprue II to an ingate I to the ingate II is (0.20 to 0.80) to (1.80 to 2.60) to 1 to (4.0 to 6.0) to (2 to 4); during the moulding by pouring, the taphole temperature of iron liquor is from 1430 DEG C to 1500 DEG C; the magnesium explosion time is from 1.20 seconds to 4.50 seconds; the pouring temperature is controlled from 1275 DEG C to 1370 DEG C; the pouring time is from 30 seconds to 70 seconds; and then a cast (1) is obtained. Compared with the prior art, the method ensures that a large cast is not easy to deform or to produce a shrinkage hole, shrinkage porosity or entrapped slag, and the rate of finished products is high.

Description

Technical field: [0001] The invention relates to a casting method of a wind power generator nacelle casting. Background technique: [0002] At present, the sand casting process of ordinary parts is adopted for the castings of the wind turbine nacelle, but the weight of the castings of the wind turbine nacelle is about 7.2 tons, and the dimensions of the castings are 2480mm×2800mm×1860mm. Higher, longer length, while the sand box rigidity, sand strength, exhaust and slag retaining design and pouring temperature of the sand casting process of ordinary parts are not suitable for the casting of large parts, so the residual stress is large and easy to deform during casting , Shrinkage cavity, shrinkage porosity and slag inclusions are scrapped, and the casting yield is low. Invention content: [0003] Aiming at the above problems, the present invention provides a casting method for a wind power generator nacelle casting that can make large castings less likely to be deformed, ...

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
IPC IPC(8): B22C9/02B22C9/08B22C9/22C22C37/10
Inventor 赵益峰马超宋贤发
Owner 宁波日星铸业有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products