CN108355931A - A kind of die casting process of surface treatment - Google Patents
A kind of die casting process of surface treatment Download PDFInfo
- Publication number
- CN108355931A CN108355931A CN201810142600.XA CN201810142600A CN108355931A CN 108355931 A CN108355931 A CN 108355931A CN 201810142600 A CN201810142600 A CN 201810142600A CN 108355931 A CN108355931 A CN 108355931A
- Authority
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- China
- Prior art keywords
- die casting
- surface treatment
- ash material
- protrusion
- filled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004512 die casting Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004381 surface treatment Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000007921 spray Substances 0.000 claims abstract description 20
- 238000011282 treatment Methods 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000007711 solidification Methods 0.000 claims abstract description 10
- 230000008023 solidification Effects 0.000 claims abstract description 10
- 239000003973 paint Substances 0.000 claims abstract description 7
- 244000137852 Petrea volubilis Species 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 230000001256 tonic effect Effects 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 16
- 238000000576 coating method Methods 0.000 abstract description 16
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 238000007592 spray painting technique Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 210000004884 grey matter Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/12—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention relates to a kind of die casting process of surface treatment, including step：S1, ash material is filled up in the hole of die casting；The die casting that S2, baking have been filled up；S3, the ash material drying solidification for waiting for die casting, smooth out the protrusion formed through overbaking on die casting or recess position, until protrusion or recess position surface dry are smooth；S4, spray treatment is carried out to die casting, obtains finished product.The present invention effectively reduces the bulge phenomenon of finished product paint film using first toasting again plus by the way of sprayed coating, improves product yield；Specifically, also being toasted after die casting is painted or dusted, finished product die casting is obtained.
Description
Technical field
The present invention relates to field of metal surface treatment more particularly to a kind of die casting process of surface treatment.
Background technology
In the prior art, the spray treatment flow of die casting is usually that the table of die casting is first filled up with ash materials such as poly-putty bases
Then face hole carries out spraying or spray painting processing, last baking-curing sprayed coating.But this method has a serious drawback：Hole
Gas and steam in the ash material that hole is filled up are expanded due to baking, but since paint film is airtight, and gas can not be discharged in time, make
It expanding jack-up outward at gas, coating surface is made to form bulge, finished surface is uneven, and this product can only scrap processing,
Yields is reduced, production cost is improved, seriously constrains the benign development of producer.
Invention content
It is an object of the invention to propose a kind of die casting process of surface treatment, die casting paint film can be simply solved
Bulge problem improves product yield.
A kind of die casting process of surface treatment, including step：S1, ash material is filled up in the hole of the die casting；S2、
Toast the die casting filled up；S3, the ash material drying solidification for waiting for the die casting, smooth out on the die casting through overbaking
The protrusion of formation or recess position, until the protrusion or recess position surface dry are smooth；S4, to the die casting into
Row spray treatment, obtains finished product.
In some embodiments, there is step S0 before step S1：It degreased, derusted to the surface of the die casting
Erosion, depainting film and the processing except moisture content.
In some embodiments, there is step S5 after step S4：Baking has carried out the die casting of spray treatment.
In some embodiments,：The ash material is poly-putty base or aluminum healant.
In some embodiments, the temperature of baking in step s 2 is 100 ~ 400 DEG C.
In some embodiments, the protrusion or the recess position are smoothed out using scraper or sand paper in step s3.
In some embodiments, spray treatment in step s 4 is spray painting or dusts.
Advantage is：Using first toasting again plus by the way of sprayed coating, the bulge phenomenon of finished product paint film is effectively reduced,
Improve product yield.
Description of the drawings
Fig. 1 is the process flow diagram of first embodiment of the invention.
Fig. 2 is the process flow diagram of second embodiment of the invention.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
A kind of die casting process of surface treatment, including step：S1, ash material is filled up in the hole of the die casting；S2、
Toast the die casting filled up；S3, the ash material drying solidification for waiting for the die casting, smooth out on the die casting through overbaking
The protrusion of formation or recess position, until the protrusion or recess position surface dry are smooth；S4, to the die casting into
Row spray treatment, obtains finished product.
This process of surface treatment, using first toasting, then the technological process sprayed.When baking, the remaining that is filled in ash material
Air can be released because of expanded by heating, and after gas release, the ash material forms protrusion or recess position, it is therefore desirable to pressure
The ash material of cast(ing) surface carries out floating processing, to play the role of improving filling ash material density and flatness.Under normal circumstances, it dries
Roasting is to carry out in an oven.
It is first sprayed using the prior art through overtesting, then the die casting finished product that the technique toasted is surface-treated,
Its yields about only has 50%, that is to say, that in every 10 finished products, there are about 5 meetings because of protrusion or recess position（Bulge）It is apparent and
It scraps, this is a significant problem for hindering industry development.And process of surface treatment using the present invention, due to before spraying
Bubble is just eliminated, smooth surface greatly reduces after spraying baking and the possibility of bulge occurs, and actually tries
The result tested is also shown, and all finished products observe by the naked eye equal flat appearance, entirely certified products.
In some embodiments, there is step S0 before step S1：It degreased, derusted to the surface of the die casting
Erosion, depainting film and the processing except moisture content.
This is that die casting based process link can effectively improve ash material and die casting if the surface treatment of die casting is clean
Adhesiveness between part makes ash material is stronger to be filled in the hole of die casting.
In some embodiments, there is step S5 after step S4：Baking has carried out the die casting of spray treatment.
According to different spray treatments, sprayed coating natural air drying can be allowed, can also carry out baking processing in an oven.
In some embodiments, the ash material is poly-putty base or aluminum healant.
Poly-putty base have grey matter it is fine and smooth, easily blade coating, easily fill and lead up, be easy sanding, rate of drying is fast, strong adhesive force, hardness height, no
The advantages that easy scuffing, good, heat-resisting, the not easy to crack blistering of flexibility, short construction period, it is particularly suitable for being used in and fills up die casting
Hole.
And aluminum healant is suitable for the repairing of various metal surfaces, vertical plane, convex surface or concave surface, and high-low temperature resistant（-
60 DEG C~+80 DEG C or so）, there is excellent physical mechanical property, adhesive strength, electrical insulation capability, resistance to chemical corrosion, it is resistance to
Hot property and chemical stability, shrinking percentage and water absorption rate are low, and after high mechanical strength mixes two-component, hardening forms a kind of secured
Metalloid shape material, can be also machined, while having the characteristics that quick, economical, durable.
In some embodiments, the temperature of baking in step s 2 is 100 ~ 400 DEG C.
It is required according to the type of spraying, thickness and production efficiency, the baking temperature is set in this value range, to the greatest extent
Amount makes remaining steam in ash material and air release.
In some embodiments, the protrusion or the recess position are smoothed out using scraper or sand paper in step s3.
It is polished in the protrusion of die casting or recess position surface with scraper or sand paper, it is ensured that surface bulge is removed,
It takes advantage of a situation the hole filled and led up and be not completely covered, keeps die casting overall surface smooth, then in the subsequently flow of baking sprayed coating,
Just hardly there is bulge.
In some embodiments, spray treatment in step s 4 is spray painting or dusts.
Spray painting is by means of compressed air by liquid coating（Paint）It is dispersed into coating cloud particle and is adhered to die casting surface.
Dust is to be dispersed into dust cloud particle under high-pressure electrostatic effect by means of compressed air arch powder to be adsorbed on die casting table by electric field
Face.It dusts to be called and does electrostatic powder coating, cannot simply be completed with spray gun for paint.Electrostatic power spraying apparatus is generally by powder barrel
（With compressed air powder supply）, HV generator, static powder gun composition.
It is illustrated below by specific embodiment.
Comparative example one
Die casting is handled in accordance with the following steps：
Step 1: ash material is filled up in the hole of die casting；
Step 2: waiting for the ash material drying solidification of die casting, the protrusion on die casting or recess position are smoothed out, until protrusion or recessed
It is smooth to fall into position surface dry；
Step 3: carrying out spray treatment to die casting；
Step 4: adjusting oven temperature to 100 DEG C, die casting is toasted, finished product is obtained.
Comparative example two
Die casting is handled in accordance with the following steps：
Step 1: ash material is filled up in the hole of die casting；
Step 2: waiting for the ash material drying solidification of die casting, the protrusion on die casting or recess position are smoothed out, until protrusion or recessed
It is smooth to fall into position surface dry；
Step 3: carrying out spray treatment to die casting；
Step 4: adjusting oven temperature to 200 DEG C, die casting is toasted, finished product is obtained.
Comparative example three
Die casting is handled in accordance with the following steps：
Step 1: ash material is filled up in the hole of die casting；
Step 2: waiting for the ash material drying solidification of die casting, the protrusion on die casting or recess position are smoothed out, until protrusion or recessed
It is smooth to fall into position surface dry；
Step 3: carrying out spray treatment to die casting；
Step 4: adjusting oven temperature to 400 DEG C, die casting is toasted, finished product is obtained.
Embodiment one
S1, ash material is filled up in the hole of die casting；
S2, oven temperature is adjusted to 100 DEG C, toast the die casting filled up；
S3, the ash material drying solidification for waiting for die casting, smooth out the protrusion formed through overbaking on die casting or recess position, until convex
It plays object or recess position surface dry is smooth；
S4, spray treatment is carried out to die casting, obtains finished product.
Embodiment two
S1, ash material is filled up in the hole of die casting；
S2, oven temperature is adjusted to 200 DEG C, toast the die casting filled up；
S3, the ash material drying solidification for waiting for die casting, smooth out the protrusion formed through overbaking on die casting or recess position, until convex
It plays object or recess position surface dry is smooth；
S4, spray treatment is carried out to die casting, obtains finished product.
Embodiment three
S1, ash material is filled up in the hole of die casting；
S2, oven temperature is adjusted to 400 DEG C, toast the die casting filled up；
S3, the ash material drying solidification for waiting for die casting, smooth out the protrusion formed through overbaking on die casting or recess position, until convex
It plays object or recess position surface dry is smooth；
S4, spray treatment is carried out to die casting, obtains finished product.
The finished surface obtained according to above procedure is observed by the naked eye, the analysis of following table is obtained.
1 surface smoothness of table
| Embodiment | Baking temperature（℃） | Surface smoothness |
| Comparative example one | 100℃ | Sprayed coating has slight convex. |
| Comparative example two | 200℃ | Sprayed coating has apparent protrusion. |
| Comparative example three | 400℃ | Sprayed coating has more protrusion or recess position. |
| Embodiment one | 100℃ | Sprayed coating is without protrusion. |
| Embodiment two | 200℃ | Sprayed coating is without protrusion. |
| Embodiment three | 400℃ | Sprayed coating has the uneven protrusion in part. |
The above content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the thought of the present invention,
There will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as the limit to the present invention
System, therefore protection scope of the present invention is subject to the range that claim defines.
Claims (7)
1. a kind of die casting process of surface treatment, which is characterized in that including step：
S1, ash material is filled up in the hole of the die casting；
The die casting that S2, baking have been filled up；
S3, the ash material drying solidification for waiting for the die casting, smooth out the protrusion formed through overbaking on the die casting or recess
Position, until the protrusion or recess position surface dry are smooth；
S4, spray treatment is carried out to the die casting, obtains finished product.
2. die casting process of surface treatment as described in claim 1, which is characterized in that there is step S0 before step S1：It is right
The surface of the die casting is degreased, except corrosion, depainting film and except the processing of moisture content.
3. die casting process of surface treatment as described in claim 1, which is characterized in that there is step S5 after step S4：It dries
The roasting die casting for having carried out spray treatment.
4. die casting process of surface treatment as described in claim 1, it is characterised in that：The ash material is that poly-putty base or aluminum are repaiied
Tonic.
5. die casting process of surface treatment as described in claim 1, which is characterized in that the temperature of baking in step s 2 is
100~400℃。
6. die casting process of surface treatment as described in claim 1, which is characterized in that use scraper or sand paper in step s3
To smooth out the protrusion or the recess position.
7. die casting process of surface treatment as described in claim 1, which is characterized in that spray treatment in step s 4 is spray
It paints or dusts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142600.XA CN108355931A (en) | 2018-02-11 | 2018-02-11 | A kind of die casting process of surface treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142600.XA CN108355931A (en) | 2018-02-11 | 2018-02-11 | A kind of die casting process of surface treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108355931A true CN108355931A (en) | 2018-08-03 |
Family
ID=63005918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810142600.XA Pending CN108355931A (en) | 2018-02-11 | 2018-02-11 | A kind of die casting process of surface treatment |
Country Status (1)
| Country | Link |
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| CN (1) | CN108355931A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128159A (en) * | 2018-09-21 | 2019-01-04 | 歌尔股份有限公司 | A kind of method and mold of the roughness on the surface for reducing coarse material |
| CN110586432A (en) * | 2019-08-22 | 2019-12-20 | 上海大陆汽车制动系统销售有限公司 | Electrostatic powder spraying process for surface of cast iron brake |
| CN112404389A (en) * | 2020-11-18 | 2021-02-26 | 无锡市斌悦机械科技有限公司 | Die casting process of main body die |
| CN112643013A (en) * | 2020-12-02 | 2021-04-13 | 东莞仁海科技股份有限公司 | Die casting surface anodic treatment process |
| CN114082959A (en) * | 2021-11-23 | 2022-02-25 | 国铭铸管股份有限公司 | Surface treatment process for nodular cast pipes |
| CN115418594A (en) * | 2022-08-19 | 2022-12-02 | 曾祥书 | Surface treatment process for hardware die casting |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535973A (en) * | 1978-09-08 | 1980-03-13 | Dainippon Toryo Co Ltd | Repairing and coating of automobile body |
| CN102391812A (en) * | 2011-09-25 | 2012-03-28 | 北京天诚宇新材料技术有限公司 | Iron repairing agent |
| CN102632361A (en) * | 2012-04-26 | 2012-08-15 | 重庆建设摩托车股份有限公司 | Repairing method for shrinkage blowhole of box body of motorcycle engine |
| CN102935423A (en) * | 2012-10-19 | 2013-02-20 | 洛阳高登回转支承有限公司 | Metal surface preservative treatment method |
| CN104841626A (en) * | 2015-02-16 | 2015-08-19 | 上海祥贸实业有限公司 | Repairing method of metal workpiece |
| CN107159531A (en) * | 2017-07-12 | 2017-09-15 | 安徽凯密克企业管理咨询有限公司 | A kind of lacquer spraying technique of auto parts |
-
2018
- 2018-02-11 CN CN201810142600.XA patent/CN108355931A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535973A (en) * | 1978-09-08 | 1980-03-13 | Dainippon Toryo Co Ltd | Repairing and coating of automobile body |
| CN102391812A (en) * | 2011-09-25 | 2012-03-28 | 北京天诚宇新材料技术有限公司 | Iron repairing agent |
| CN102632361A (en) * | 2012-04-26 | 2012-08-15 | 重庆建设摩托车股份有限公司 | Repairing method for shrinkage blowhole of box body of motorcycle engine |
| CN102935423A (en) * | 2012-10-19 | 2013-02-20 | 洛阳高登回转支承有限公司 | Metal surface preservative treatment method |
| CN104841626A (en) * | 2015-02-16 | 2015-08-19 | 上海祥贸实业有限公司 | Repairing method of metal workpiece |
| CN107159531A (en) * | 2017-07-12 | 2017-09-15 | 安徽凯密克企业管理咨询有限公司 | A kind of lacquer spraying technique of auto parts |
Non-Patent Citations (1)
| Title |
|---|
| 杨光明: "《汽车维修快速入门 汽车涂装快速入门》", 30 September 2015, 湖南科学技术出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128159A (en) * | 2018-09-21 | 2019-01-04 | 歌尔股份有限公司 | A kind of method and mold of the roughness on the surface for reducing coarse material |
| CN109128159B (en) * | 2018-09-21 | 2024-02-13 | 歌尔光学科技有限公司 | Method and die for reducing surface roughness of rough material |
| CN110586432A (en) * | 2019-08-22 | 2019-12-20 | 上海大陆汽车制动系统销售有限公司 | Electrostatic powder spraying process for surface of cast iron brake |
| CN112404389A (en) * | 2020-11-18 | 2021-02-26 | 无锡市斌悦机械科技有限公司 | Die casting process of main body die |
| CN112643013A (en) * | 2020-12-02 | 2021-04-13 | 东莞仁海科技股份有限公司 | Die casting surface anodic treatment process |
| CN114082959A (en) * | 2021-11-23 | 2022-02-25 | 国铭铸管股份有限公司 | Surface treatment process for nodular cast pipes |
| CN115418594A (en) * | 2022-08-19 | 2022-12-02 | 曾祥书 | Surface treatment process for hardware die casting |
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Application publication date: 20180803 |