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Lost Foam Coating Thickness Control and Quick Inspection Method for Gearbox Housing Products

A technology of coating thickness and gearbox, which is applied in the direction of coating, manufacturing tools, casting and molding equipment, etc., can solve the problems of lost foam coating damage, low measurement efficiency, unsuitable for batch testing, etc., to save costs and improve products The effect of yield rate and process is simple and easy

Active Publication Date: 2020-02-07
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针对重量为100-500KG的铸铁件:

[0062] (1)称量粘接好后的白模重量为W1为1.3KG;

[0063] (2)将白模浸润到波美度为64°Bé的涂料中进行挂涂,将涂覆后的白模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-45℃,烘烤时间8-10h;

[0064] (3)将步骤(2)中烘干后的黄模浸润到波美度为68°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0065] (4)将步骤(3)中烘干后的黄模浸润到波美度为70°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0066] (5)称量步骤(4)中烘干后的黄模的重量W2为17.5KG,可知W2为W1的13.5倍;符合W2为W1的13.3-13.9倍的要求,此时测得涂层的厚度为2mm,符合要求;

[0067] B针对重量小于100KG的铸铁件:

[0068] (1)称量粘接好后的白模重量为W1为0.4KG;

[0069] (2)将白模浸润到波美度为66°Bé的涂料中进行挂涂,将涂覆后的白模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-45℃,烘烤时间8-10h;

[0070] (3)将步骤(2)中烘干后的黄模浸润到波美度为68°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0071] (4)将步骤(3)中烘干后的黄模浸润到波美度为72°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0072] (5)称量步骤(4)中烘干后的黄模的重量W2为4.8KG,可知W2为W1的12倍,符合W2为W1的11.5-12.3倍的要求,此时涂层的厚度为1.7mm,符合要求。

Embodiment 2

[0074] A针对重量为100-500KG的铸铁件:

[0075] (1)称量粘接好后的白模重量为W1为1.3KG;

[0076] (2)将白模浸润到波美度为63°Bé的涂料中进行挂涂,将涂覆后的白模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-45℃,烘烤时间8-10h;

[0077] (3)将步骤(2)中烘干后的黄模浸润到波美度为67°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0078] (4)将步骤(3)中烘干后的黄模浸润到波美度为69°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0079] (5)称量步骤(4)中烘干后的黄模的重量W2为17.29KG,可知W2为W1的13.3倍;符合W2为W1的13.3-13.9倍的要求,此时测得涂层的厚度为1.6mm,符合要求;

[0080] B针对重量小于100KG的铸铁件:

[0081] (1)称量粘接好后的白模重量为W1为0.4KG;

[0082] (2)将白模浸润到波美度为65°Bé的涂料中进行挂涂,将涂覆后的白模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-45℃,烘烤时间8-10h;

[0083] (3)将步骤(2)中烘干后的黄模浸润到波美度为67°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0084] (4)将步骤(3)中烘干后的黄模浸润到波美度为71°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0085] (5)称量步骤(4)中烘干后的黄模的重量为4.6KG,可知W2为W1的11.5倍,符合W2为W1的11.5-12.3倍的要求,此时涂层的厚度为1.5mm,符合要求。

Embodiment 3

[0087] A针对重量为100-500KG的铸铁件:

[0088] (1)称量粘接好后的白模重量为W1为1.3KG;

[0089] (2)将白模浸润到波美度为65°Bé的涂料中进行挂涂,将涂覆后的白模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-45℃,烘烤时间8-10h;

[0090] (3)将步骤(2)中烘干后的黄模浸润到波美度为69°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0091] (4)将步骤(3)中烘干后的黄模浸润到波美度为71°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0092] (5)称量步骤(4)中烘干后的黄模的重量W2为18.07KG,可知W2为W1的13.9倍;符合W2为W1的13.3-13.9倍的要求,此时涂层的厚度为2.2mm;符合要求;

[0093] B针对重量小于100KG的铸铁件:

[0094] (1)称量粘接好后的白模重量为W1为0.4KG;

[0095] (2)将白模浸润到波美度为67°Bé的涂料中进行挂涂,将涂覆后的白模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-45℃,烘烤时间8-10h;

[0096] (3)将步骤(2)中烘干后的黄模浸润到波美度为69°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0097] (4)将步骤(3)中烘干后的黄模浸润到波美度为73°Bé的涂料中进行挂涂,将涂覆后的黄模放置在平面平整的栅格架上,静置后移至周转车转入烘房进行烘干,烘干温度为40-50℃,烘烤时间8-10h;

[0098] (5)称量步骤(4)中烘干后的黄模的重量W2为4.92KG,可知W2为W1的12.3倍,符合W2为W1的11.5-12.3倍的要求,此时涂层的厚度为1.8mm,符合要求。

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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 Patents(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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