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V-process casting process for producing engineering mechanical counterweight block

A technology for production engineering and casting process, which is applied in the field of V-method casting process for producing counterweights of construction machinery, which can solve the problems of poor exhaust, poor solidification of molten metal, deformation of cavity, etc., and achieve enhanced air permeability and shortened Casting time, effect of increased firmness

Active Publication Date: 2019-12-31
柳州市顺昇机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a V-method casting process for producing construction machinery counterweights in order to solve the problems of poor exhaust, cavity deformation, and poor solidification of poured molten metal during the casting process of counterweights

Method used

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  • V-process casting process for producing engineering mechanical counterweight block
  • V-process casting process for producing engineering mechanical counterweight block
  • V-process casting process for producing engineering mechanical counterweight block

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A V-method casting process for producing construction machinery counterweights, comprising the following steps:

[0031] a. Make upper and lower two models according to the appearance size of the counterweight, cover the surface of the upper model with the heated film, and then press the dead corner of the upper model, so that the film at the dead corner is close to the upper model; the same method is used for the lower model for film covering;

[0032]b. After the upper model and the lower model are all covered with film, spray paint on the covered film surface to form a coating with a thickness of 1.2mm; the paint includes the following raw materials in parts by weight: 69 parts of quartz sand powder, flake graphite powder 16 parts, 17 parts of bentonite, 14 parts of zircon powder, 10 parts of polystyrene and 10 parts of bauxite;

[0033] c. Place a sand box on the upper model that has been sprayed with paint, then fill it with dry sand, vibrate it, and then vacuumiz...

Embodiment 2

[0037] A V-method casting process for producing construction machinery counterweights, comprising the following steps:

[0038] a. Make upper and lower two models according to the appearance size of the counterweight, cover the surface of the upper model with the heated film, and then press the dead corner of the upper model, so that the film at the dead corner is close to the upper model; the same method is used for the lower model for film covering;

[0039] b. After the upper model and the lower model are covered with film, spray paint on the covered film surface to form a coating with a thickness of 0.7mm, and then immediately spray dry ice powder; the paint includes the following raw materials in weight ratio: quartz sand powder 51 parts, 4 parts of flake graphite powder, 5 parts of bentonite, 4 parts of zircon powder, 2 parts of polystyrene, 2 parts of bauxite, 5 parts of calcium fluoride, 11 parts of paris plaster powder, 3 parts of artemisia wax, seaweed 2 parts of su...

Embodiment 3

[0048] A V-method casting process for producing construction machinery counterweights, comprising the following steps:

[0049] a. Make upper and lower two models according to the appearance size of the counterweight, cover the surface of the upper model with the heated film, and then press the dead corner of the upper model, so that the film at the dead corner is close to the upper model; the same method is used for the lower model for film covering;

[0050] b. After the upper model and the lower model are covered with film, spray paint on the covered film surface to form a coating with a thickness of 0.9mm, and then immediately spray dry ice powder; the paint includes raw materials in the following weight ratio: quartz sand powder 53 parts, 5.5 parts of flake graphite powder, 6.5 parts of bentonite, 5 parts of zircon powder, 3 parts of polystyrene, 3 parts of bauxite, 15 parts of calcium fluoride, 23 parts of plaster powder, 8 parts of artemisia wax, seaweed 8 parts of sug...

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Abstract

The invention provides a V-process casting process for producing an engineering mechanical counterweight block, and particularly relates to the technical field of counterweight block casting. The V-process casting process for producing the engineering mechanical counterweight block simplifies a thin film covering method in the process, polystyrene, calcium fluoride, calcined gypsum powder, artemisinin wax, trehalose and zinc oxide whiskers are added to a coating, the wear resistance and adhesive force of the coating are enhanced, meanwhile, filled dry sands are pretreated, carbon aerogel, soybean protein and cyclic olefin copolymer are added, the air permeability of the dry sands is enhanced, the compactness is increased, the non-fleshiness, non-air-holes, non-sand burning and unfilled corner counterweight block with a bright and clean surface is finally obtained, the weight deviation of the counterweight block is kept within the range of + / -6 kg, the dimensional deviation is kept within + / -4 mm, and the product yield is up to 80% or above. The V-process casting process is simple to operate, controllable in parameter and easy to realize, and is suitable for large-scale production.

Description

【Technical field】 [0001] The invention relates to the technical field of counterweight casting, in particular to a V-method casting process for producing construction machinery counterweights. 【Background technique】 [0002] The counterweight is a casting used to increase its own weight to maintain balance. It is widely used in construction machinery, such as excavators, forklifts, loaders, cranes, etc. The balance weight does not have high requirements on mechanical performance, but it has strict requirements on weight deviation. If it is too light, it will not work, and if it is too heavy, the machine will not work normally; if the size of the balance weight is not accurate, it will affect its performance The firmness of the mechanical installation and the deviation in size will eventually be reflected in the weight deviation, so it is necessary to focus on controlling the weight accuracy and dimensional accuracy. [0003] At present, the V-method casting process is gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/03B22C3/02B22C1/00C22C33/06
CPCB22C1/00B22C3/00B22C9/03C22C33/006C22C33/06
Inventor 覃诱硬杜厚枢杜勇卫
Owner 柳州市顺昇机械有限公司
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