Seamless combination technology for sand cores of double-vortex volute

A combined process, double eddy current technology, applied in the direction of cores, manufacturing tools, metal processing equipment, etc., can solve the problems of imperfect sand core technology, and achieve the effect of saving labor input, convenient operation and perfect process

Active Publication Date: 2016-12-07
江苏华培动力科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the sand core process was not perfect, the repair rate of sand

Method used

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  • Seamless combination technology for sand cores of double-vortex volute
  • Seamless combination technology for sand cores of double-vortex volute
  • Seamless combination technology for sand cores of double-vortex volute

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Experimental program
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Embodiment Construction

[0017] Figure 1-3 , double vortex volute sand core seamless combination process, specifically,

[0018] 1) Core making, the double vortex volute sand core is divided into upper sand core 1 and lower sand core 2, which are respectively made and shaped by sand core molds;

[0019] 2) Assemble the sand core, clean the sharp corners of the upper sand core 1 and the lower sand core 2 with electrodes, and apply a layer of adhesive on the joint, the upper sand core is fastened on the lower sand core, and the upper sand core The sand core and the lower sand core are connected by an adhesive, and the upper sand core and the lower sand core are placed together on the auxiliary tooling for 1-2 minutes, and the adhesive is cured to make the gap between the upper sand core and the lower sand core The gap is 0.1mm;

[0020] 3) Soak the sand cores, place the bonded sand cores in the paint mixing tank for soaking, and the Baume degree of the paint will reach 30;

[0021] 4) Drying, drying...

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Abstract

The invention relates to a seamless combination technology for sand cores of a double-vortex volute. The seamless combination technology comprises the following steps: making cores; assembling the sand cores, to be specific, carrying out electrode corner cleaning on the sharp corners of the parts needing to be connected of the upper sand core and the lower sand core, coating the connecting parts with one layer of adhesive, covering the upper sand core on the lower sand core, placing the upper sand core and the lower sand core on an auxiliary tool together, clamping the upper sand core and the lower sand core for 1-2 minutes, solidifying the adhesive, and enabling a seam between the upper sand core and the lower sand core to be 0.1mm; soaking the sand cores, to be specific, placing the sand cores which are glued together in a paint mixing barrel and soaking the sand cores in a paint of which the baume degree reaches 30-60; and drying, to be specific, carrying out drying operation on the soaked sand cores by a drying oven, setting drying tine according to product structures, which is generally 16 minutes, and finishing the sand core technical process. The seamless combination technology has the advantages that the technology is perfect, the operation is convenient, the plate-isolated core drilling defects of a double-runner turbo-charging shell are solved, and by utilizing the auxiliary tool and die design improvement, casting plate-isolated core drilling defects caused by large sand core seams can be effectively solved.

Description

technical field [0001] The invention relates to the field of double vortex volute casting, in particular to a double vortex volute sand core seamless combination process. Background technique [0002] As the shape of the turbocharged casing of auto parts becomes more and more complex, and the material is changed from cast iron to cast steel, it has become very difficult to produce high-quality castings by the existing casting process. It is urgent to upgrade and improve the existing process to ensure that the company Continue to maintain competitiveness in the market. In the past, the sand core process was not perfect, the repair rate of sand core was 95%, and the failure rate of diaphragm drilling core was about 25%. Contents of the invention [0003] In order to solve the above-mentioned problems, the present invention proposes a double vortex volute sand core seamless combination process, which is perfect in process and convenient in operation, and solves the defect of...

Claims

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Application Information

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IPC IPC(8): B22C9/10
CPCB22C9/103B22C9/108
Inventor 陈文涛杜少辉朱元健张二刚陈锦林
Owner 江苏华培动力科技有限公司
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