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DISA vertical green molding sand molding line air cylinder mold and casting process thereof

A casting process and green sand technology, which is applied to the B096 cylinder mold of the DISA vertical green sand molding line and its casting process field, can solve the problems of sticking sand, casting shrinkage holes, weight-reducing holes and succulents, etc. The effect of flow velocity and enhanced slag avoidance

Pending Publication Date: 2019-06-28
山东格新精工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a DISA vertical green sand molding line B096 cylinder mold and its casting process, solve the problems of casting shrinkage cavity, shrinkage porosity and weight loss holes, meaty, sticky sand, etc., and make the casting The rate of finished products and the rate of process output are greatly improved; the operation of workers is simple and easy, which meets the needs of mass production

Method used

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  • DISA vertical green molding sand molding line air cylinder mold and casting process thereof
  • DISA vertical green molding sand molding line air cylinder mold and casting process thereof
  • DISA vertical green molding sand molding line air cylinder mold and casting process thereof

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Effect test

Embodiment 1

[0043] The casting process of a DISA vertical green sand molding line B096 cylinder is as follows: including molding process, smelting process, inoculation process, pouring process, sand falling process, mechanical performance testing, primary shot blasting, external grinding, secondary shot blasting, inspection wrap up and store;

[0044] 1) molding process, the molding process adopts the green molding sand vertical line boxless molding, and the green molding sand vertical line boxless molding adopts the molding template as the overall template;

[0045] Modeling requirements: sand shooting pressure 0.22MPa, extrusion pressure 0.9MPa, select operation 3A;

[0046] Molding sand performance requirements: sand thickness 210mm, sand hardness 85 based on B-type hardness, moisture content 3.3%, compaction rate 35%, wet compressive strength 0.18Mpa, air permeability 90%, volatile matter 1.5%, shear strength 0.03Mpa, The moisture content of the old sand returned to the sand is 1.5%, t...

Embodiment 2

[0059] The casting process of a DISA vertical green sand molding line B096 cylinder is as follows: including molding process, smelting process, inoculation process, pouring process, sand falling process, mechanical performance testing, primary shot blasting, external grinding, secondary shot blasting, inspection wrap up and store;

[0060] 1) molding process, the molding process adopts the green molding sand vertical line boxless molding, and the green molding sand vertical line boxless molding adopts the molding template as the overall template;

[0061] Modeling requirements: sand shooting pressure 0.24MPa, extrusion pressure 0.85MPa, select operation 3A;

[0062] Molding sand performance requirements: sand thickness 210mm, sand hardness 85 based on B-type hardness, moisture content 3.4%, compaction rate 35%, wet compressive strength 0.18Mpa, air permeability 100%, volatile matter 2.0%, shear strength 0.03Mpa, The moisture content of the old sand returned to the sand is 1.8...

Embodiment 3

[0075] The casting process of a DISA vertical green sand molding line B096 cylinder is as follows: including molding process, smelting process, inoculation process, pouring process, sand falling process, mechanical performance testing, primary shot blasting, external grinding, secondary shot blasting, inspection wrap up and store;

[0076] 1) molding process, the molding process adopts the green molding sand vertical line boxless molding, and the green molding sand vertical line boxless molding adopts the molding template as the overall template;

[0077] Modeling requirements: sand shooting pressure 0.25MPa, extrusion pressure 1MPa, selection operation 3A;

[0078] Molding sand performance requirements: sand thickness 215mm, sand hardness 90 based on B-type hardness, moisture content 3.2%, compaction rate 38%, wet compressive strength 0.22Mpa, air permeability 120%, volatile matter 1.5%, shear strength 0.04Mpa, The moisture content of the old sand returned to the sand is 2.2...

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Abstract

The invention discloses a DISA vertical green molding sand molding line air cylinder mold and a casting process thereof. The mold comprises a forward pressing plate, a reverse pressing plate, anti-collision columns and positioning pin bushes, wherein the forward pressing plate and the reverse pressing plate are both provided with pouring gate cups, the tail end of a horizontal runner is provided with a horizontal runner riser, the forward pressing plate and the reverse pressing plate are both provided with a plurality of feeding risers, the lower portions of the feeding risers are provided with vertical pouring gates, the two sides of the vertical pouring gates of the forward pressing plate and the reverse pressing plate are both provided with mold core mold cavities, the two ends of the vertical pouring gates of the forward pressing plate are provided with pouring gates, the pouring gates communicate with the mold core mold cavities of the forward pressing plate horizontally, the topsof the mold core mold cavities of the forward pressing plate are provided with air exhaust pieces, and the air exhaust pieces communicate with air exhaust passages. The casting process comprises themolding working procedure, the smelting working procedure, the nucleating working procedure, the pouring working procedure, the shakeout working procedure, mechanical property detection, primary shotblasting, external cooperation polishing, secondary shot blasting, inspecting packing and warehousing. By means of the DISA vertical green molding sand molding line air cylinder mold and the casting process thereof, the problems of casting shrinkage cavities and shrinkage porosity, weight reducing hole fleshiness and sand sticking and the like are solved, the casting finished product rate and theprocess production rate are greatly increased, and the mass production requirements are met.

Description

technical field [0001] The invention belongs to the technical field of precision casting, and in particular relates to a DISA vertical green sand molding line B096 cylinder mold and its casting process. Background technique [0002] At present, the cylinder is one of the main supporting parts of the air-conditioning compressor, and its performance largely determines the performance and quality of the air-conditioning compressor. The B096 cylinder is one of the three main key castings of the air-conditioning compressor. [0003] The B096 cylinder casting is a solid part, the material is HT200, and the maximum wall thickness is about 38mm; the original process is the vertical molding line green sand, and the processing surface is placed flat to enter the molten iron or the top is injected into the molten iron production method, but it is easy to appear at the suction hole. Shrinkage cavities, shrinkage porosity and sand slag holes remain high, which seriously restricts the mas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/24B22C9/02B22C9/08
Inventor 孙成瑜郑加彬张强张素景
Owner 山东格新精工有限公司
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