CN101440467B - Protecting method for metal component screwed hole in hot-dip galvanizing antiseptic treatment - Google Patents
Protecting method for metal component screwed hole in hot-dip galvanizing antiseptic treatment Download PDFInfo
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- CN101440467B CN101440467B CN2008102383934A CN200810238393A CN101440467B CN 101440467 B CN101440467 B CN 101440467B CN 2008102383934 A CN2008102383934 A CN 2008102383934A CN 200810238393 A CN200810238393 A CN 200810238393A CN 101440467 B CN101440467 B CN 101440467B
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- mastic
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- threaded hole
- screwed hole
- metal parts
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Abstract
The invention provides a method for protecting a screwed hole of a metal part in galvanizing antiseptic treatment. The method comprises: a first step of mastic preparation, pouring gypsum powder into a container, filling water into the container according to a volume ratio of the gypsum powder to the water of 3-4:1 to be sufficiently and evenly stirred; a second step, filling the mastic into screwed hole to be protected of the metal part by an iron panel, and extruding the mastic tightly after filling; a third step, carrying out the galvanizing antiseptic treatment on the metal part filled with the mastic; and a fourth step: taking out the mastic, and cleaning the screwed hole. The protecting method does not increase the thickness of a galvanizing coat of the screwed hole of the metal part in the process of carrying out the galvanizing antiseptic treatment on the surface of the metal part, thereby avoiding the problem that a processed screwed hole can not be assembled because of increased thickness of the galvanizing coat and other problems, and ensuring the preprocessed screw quality after the metal part is galvanized. The method is simple and feasible, and can greatly improve labor efficiency.
Description
Technical field
The present invention relates in a kind of metal part surface rotproofing process, to the method that the good position of preprocessing is protected, be specifically a kind of metal part surface in galvanizing rotproofing process, the method that the good threaded hole of preprocessing is protected.
Background technology
At present, metal part surface is not done any protection for the threaded hole on the metal parts and is handled in making the antiseptic process of galvanizing, and the thickness on the surface of metal parts comprises that the threaded portion thickness at the threaded hole place that preprocessing is good all can increase.Usually to metal parts in thread mill drilling, the thickness factor of the galvanizing layer that galvanizing rotproofing process should be produced is taken into account.But difficulty is to be difficult to very accurately determine and control the thickness of zinc-impregnating layer, and the screw thread and the design load that process have deviation, cause metal parts to install; For some metal parts, because threaded hole causes threaded hole verticality and position degree deviation easily in tapping again or when slipping silk.
Before technical solution of the present invention is finished; do not see the method that metal component screwed hole protects and use in practice in galvanizing rotproofing process, it is on the books in any document also not see the method that metal component screwed hole protects in galvanizing rotproofing process.
Summary of the invention
In order to solve metal part surface in making the antiseptic process of galvanizing; the thickness that occurs increasing zinc-impregnating layer for the good threaded hole of preprocessing; cause difficult problem for the installation of metal parts; the invention provides the guard method of a kind of metal component screwed hole in the galvanizing rotproofing; the staff is taken this method; can make metal part surface in making the antiseptic process of galvanizing; do not increase the thickness of zinc-impregnating layer; when having avoided thread mill drilling because the increase of the thickness of zinc-impregnating layer; and the difficulty of accurately determining the thickness of galvanizing that occurs has solved the accurate installation question of galvanizing metal parts.
For achieving the above object, the technical solution used in the present invention is:
The guard method of a kind of metal component screwed hole in the galvanizing rotproofing, it mainly may further comprise the steps:
The first step, the preparation mastic is poured terra alba in the container into, according to volume ratio
Terra alba: water=3-4: 1
Pour water into, stir, churning time is 30 to 120 seconds, and container is rolled, and container is rocked with top rade according to being 30 degree with level again, melts fully mutually with water until terra alba, forms mastic;
Second step was packed into said mastic in the threaded hole to be protected of metal parts with iron plate, and the extruding of filling back is closely knit, smoothly wipes remaining mastic off with iron plate;
In the 3rd step, the metal parts of above-mentioned populated mastic is done the galvanizing rotproofing;
The 4th step, the mastic that is packed into metal parts is taken out, clean out threaded hole, finish the protection of metal component screwed hole in heat dip zinc treating.
Said metal component screwed hole in the technique scheme also can be cylinder shape threaded hole or circular cone bench-type threaded hole.
The said threaded hole of technique scheme only is applicable to logical threaded hole, is not suitable for blind threaded hole.
The principle of method of the present invention is:
Gypsum is resistant to elevated temperatures material, and its chemical structure is behind the chance water
C
aSO
4·2H
2O
C
aSO
4With acids such as hydrochloric acid, sulfuric acid chemical reaction not taking place, guarantees that mastic is intact in the acid cleaning process before galvanizing.Contain two crystal water molecules in the gypsum, just contain weight and account for 21% water greatly, Here it is so-called " fire extinguishing water ", and when high temperature, above-mentioned mastic can discharge the crystal water molecule in this structure of matter,
These water moleculess can be diffused in the air on metal component screwed hole surface rapidly; and then in metal component screwed hole surface formation one deck vapor membrane; said aqueous vapor film both can reduce the temperature on metal component screwed hole surface; can play again isolate oxygen effect; so these performances of gypsum can be born the high temperature of galvanizing and no change fully when the parts galvanizing that is used for metal; this material itself is pollution-free; not easy to crack in the use; this performance meets the requirement of the preceding protection of galvanizing threaded hole; and the mastic plasticity-of making is strong, makes things convenient for actually operating.
The present invention has more following effects and positively effect:
The invention provides the guard method of a kind of metal component screwed hole in the galvanizing rotproofing; the staff is taken this method; can make metal part surface in making the antiseptic process of galvanizing; do not increase the thickness of metal component screwed hole zinc-impregnating layer; avoided thread mill drilling can't install or other problems owing to the thickness that increases zinc-impregnating layer causes; can guarantee that metal parts soaks the quality of the screw thread of preprocessing behind the zinc, present method is simple, can raise labour efficiency greatly.
Specific implementation method:
The present invention will be further described in detail below in conjunction with embodiment:
Embodiment 1:
The guard method of a kind of metal component screwed hole in the galvanizing rotproofing, it mainly may further comprise the steps:
The first step, the preparation mastic is poured terra alba in the container into for three parts, according to volume ratio
Terra alba: water=3-4: 1
Pour a water into, stir, churning time is 100 seconds, and container is rolled, and rocks with top rade according to being 30 degree with level again, melts fully mutually with water until terra alba, forms mastic;
Second step was packed into said mastic in the cylinder shape threaded hole to be protected of metal parts with iron plate, and the extruding of filling back is closely knit, smoothly wipes remaining mastic off with iron plate;
In the 3rd step, the metal parts of above-mentioned populated mastic is done the galvanizing rotproofing;
The 4th step, the mastic that is packed into metal parts is taken out, clean out threaded hole, finish metal component screwed hole in the protection in heat dip zinc treating.
Claims (2)
1. the logical guard method of threaded hole in the galvanizing rotproofing of metal parts is characterized in that it mainly may further comprise the steps:
The first step, the preparation mastic is poured terra alba in the container into, according to volume ratio
Terra alba: water=3-4: 1
Pour water into, stir, churning time is 30 to 120 seconds, and container is rolled, and container is rocked with top rade according to being 30 degree with level again, melts fully mutually with water until terra alba, forms mastic;
Second step was packed into said mastic in the threaded hole to be protected of metal parts with iron plate, and the extruding of filling back is closely knit, smoothly wipes remaining mastic off with iron plate;
In the 3rd step, the metal parts of above-mentioned populated mastic is done the galvanizing rotproofing;
The 4th step, the mastic that is packed into metal parts is taken out, clean out threaded hole, finish the protection of metal component screwed hole in heat dip zinc treating.
2. according to the logical guard method of threaded hole in the galvanizing rotproofing of the said metal parts of claim 1, it is characterized in that said metal parts leads to threaded hole, can be that the cylinder shape threaded hole also can be a circular cone bench-type threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102383934A CN101440467B (en) | 2008-12-12 | 2008-12-12 | Protecting method for metal component screwed hole in hot-dip galvanizing antiseptic treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102383934A CN101440467B (en) | 2008-12-12 | 2008-12-12 | Protecting method for metal component screwed hole in hot-dip galvanizing antiseptic treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101440467A CN101440467A (en) | 2009-05-27 |
| CN101440467B true CN101440467B (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102383934A Active CN101440467B (en) | 2008-12-12 | 2008-12-12 | Protecting method for metal component screwed hole in hot-dip galvanizing antiseptic treatment |
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| CN (1) | CN101440467B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755910B (en) * | 2017-03-31 | 2019-07-26 | 株洲时代新材料科技股份有限公司 | A kind of torsion bar shaft end thread hole is heat-treated anti-oxidation method |
| CN111673899B (en) * | 2020-06-18 | 2022-01-25 | 远科秦皇岛节能环保科技开发有限公司 | Protection method for gas turbine blade tenon |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047235A (en) * | 1989-05-16 | 1990-11-28 | 曼内斯曼股份公司 | Manufacturing has the method for the hollow workpiece of clad |
| CN1576399A (en) * | 2003-07-04 | 2005-02-09 | 精工爱普生株式会社 | Plating tool, plating method, electroplating apparatus, plated product, and method for producing plated product |
| CN1651592A (en) * | 2005-01-28 | 2005-08-10 | 左树清 | Preparation method of external zinc coated pipe |
| CN2799582Y (en) * | 2005-04-27 | 2006-07-26 | 台湾镀锌股份有限公司 | Smelting device capable of galvanizing steel pipe only on external surface |
| CN1936063A (en) * | 2006-09-29 | 2007-03-28 | 江苏双良空调设备股份有限公司 | Air cooler heat exchange pipe external surface hot-dipping aluminium-plating method |
-
2008
- 2008-12-12 CN CN2008102383934A patent/CN101440467B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047235A (en) * | 1989-05-16 | 1990-11-28 | 曼内斯曼股份公司 | Manufacturing has the method for the hollow workpiece of clad |
| CN1576399A (en) * | 2003-07-04 | 2005-02-09 | 精工爱普生株式会社 | Plating tool, plating method, electroplating apparatus, plated product, and method for producing plated product |
| CN1651592A (en) * | 2005-01-28 | 2005-08-10 | 左树清 | Preparation method of external zinc coated pipe |
| CN2799582Y (en) * | 2005-04-27 | 2006-07-26 | 台湾镀锌股份有限公司 | Smelting device capable of galvanizing steel pipe only on external surface |
| CN1936063A (en) * | 2006-09-29 | 2007-03-28 | 江苏双良空调设备股份有限公司 | Air cooler heat exchange pipe external surface hot-dipping aluminium-plating method |
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| Publication number | Publication date |
|---|---|
| CN101440467A (en) | 2009-05-27 |
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Address after: 266111 Chengyang City, Shandong Province District, Ping Road, No. 9, No. Patentee after: CRRC SIFANG CO., LTD. Address before: 266031 No. 16, Hangzhou Road, Sifang District, Shandong, Qingdao Patentee before: CSR Sifang Locomotive and Rolling Stock Co., Ltd. |
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Effective date of registration: 20210721 Address after: 266111 Hongping Road, Chengyang District, Qingdao, Shandong Province, No. 9 Patentee after: Qingdao CRRC Sifang Rail Vehicle Co.,Ltd. Address before: 266111 Hongping Road, Chengyang District, Qingdao, Shandong Province, No. 9 Patentee before: CRRC SIFANG Co.,Ltd. |