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Evanescent mold coating thickness control and quick inspection method of speed changing box shell type product

A coating thickness and gearbox technology, applied in coatings, manufacturing tools, instruments, etc., can solve problems such as unsuitable for batch testing, low measurement efficiency, and damage to lost foam coatings, so as to save costs and improve product yield , The effect of simple and easy process

Active Publication Date: 2019-02-19
昌邑市祥鑫机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This inspection method not only has low measurement efficiency and is not suitable for batch inspection, but also will cause damage to the lost foam coating, which requires re-coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A For iron castings weighing 100-500KG:

[0062] (1) Weigh the weight of the white mold after bonding, W1 is 1.3KG;

[0063] (2) Soak the white mold into the paint with a Baume degree of 64 ° Bé for hang coating, place the coated white mold on a flat grid frame, and then move it to the turnover car and transfer it to the drying room Carry out drying, the drying temperature is 40-45°C, and the baking time is 8-10h;

[0064] (3) soak the yellow mold after drying in the step (2) into the coating that Baume degree is 68 ° of Bé and carry out hanging coating, the yellow mold after the coating is placed on the flat grid frame, let stand Then move to the turnover car and transfer to the drying room for drying, the drying temperature is 40-50°C, and the baking time is 8-10h;

[0065] (4) soak the yellow mold after drying in the step (3) into the coating that Baume degree is 70 ° of Bé and carry out hanging coating, the yellow mold after the coating is placed on the flat grid ...

Embodiment 2

[0074] A For iron castings weighing 100-500KG:

[0075] (1) Weigh the weight of the white mold after bonding, W1 is 1.3KG;

[0076] (2) Soak the white mold into the paint with a Baume degree of 63°Bé for hanging coating, place the coated white mold on a flat grid frame, and after standing still, move it to the turnover car and transfer it to the drying room Carry out drying, the drying temperature is 40-45°C, and the baking time is 8-10h;

[0077] (3) soak the yellow mold after drying in the step (2) into the coating that Baume degree is 67 ° of Bé and carry out hanging coating, the yellow mold after the coating is placed on the flat grid frame, let stand Then move to the turnover car and transfer to the drying room for drying, the drying temperature is 40-50°C, and the baking time is 8-10h;

[0078] (4) soak the yellow mold after drying in the step (3) into the coating that Baume degree is 69 ° of Bé and carry out hanging coating, the yellow mold after the coating is placed...

Embodiment 3

[0087] A For iron castings weighing 100-500KG:

[0088] (1) Weigh the weight of the white mold after bonding, W1 is 1.3KG;

[0089] (2) Soak the white mold into the paint with a Baume degree of 65°Bé for hanging coating, place the coated white mold on a flat grid frame, and then move it to the turnover car and transfer it to the drying room after standing still Carry out drying, the drying temperature is 40-45°C, and the baking time is 8-10h;

[0090] (3) soak the yellow mold after drying in the step (2) into the coating that Baume degree is 69 ° of Bé and carry out hanging coating, the yellow mold after the coating is placed on the flat grid frame, let stand Then move to the turnover car and transfer to the drying room for drying, the drying temperature is 40-50°C, and the baking time is 8-10h;

[0091] (4) soak the yellow mold after drying in the step (3) into the coating that Baume degree is 71 ° of Bé and carry out hanging coating, the yellow mold after the coating is pl...

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Abstract

The invention discloses an evanescent mold coating thickness control and quick inspection method of a speed changing box shell type product. Control and quick inspection methods are provided for smalland medium size iron castings with the weight being 100 KG-500 KG and small and medium size iron castings with the weight smaller than 100 KG. The method comprises the steps that the weight of a white mold and the weight of a yellow mold after drying are weighed, the weight is controlled within a certain proportional range, through the repeated comparative experiments in the actual production operation and both the theory and practice, the problem that the painting coating thicknesses of the small and medium size castings are hard to control is solved through a specific gravity control method, and in production, the thickness of the coating can be worked out only by knowing the weight and the specific surface area of the white mold and the weight of the yellow mold which is obtained afterthe white mold coated with painting is dried. The process is simple and easy to practice, the cost is saved, and the yield is increased; the coating thickness is guaranteed by controlling the baume degree of the coating, the weight method is creatively put forward to inspect the thickness of the coating, it does not need to unrip the coating, whether the thickness of the coating is qualified or not can be rapidly inspected, and the method is suitable for volume production control and inspection of evanescent molds.

Description

technical field [0001] The invention relates to the technical field of lost foam casting, in particular to a method for controlling and quickly inspecting the thickness of the lost foam coating of gearbox casing products. Background technique [0002] Lost foam casting is a full-type casting of foam plastic mold using dry sand without binder combined with vacuum technology. The surface of the cast foam plastic model must be coated with a certain thickness of paint to form the inner shell of the mold. The function of the coating is to improve the strength and rigidity of the EPS model, and at the same time improve the ability of the model surface to resist sand erosion and prevent the model from being damaged during the sanding process. Deformation of the model during surface damage, vibration molding and negative pressure setting to ensure the dimensional accuracy of the casting. [0003] The thickness of the coating of the lost foam model affects its air permeability and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C7/02B22C3/00G01B21/08
CPCB22C3/00B22C7/02G01B21/08
Inventor 周建祥姜言涛于凤霞
Owner 昌邑市祥鑫机械制造有限公司
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