CN110695772A - Surface treatment process for small stainless steel casting - Google Patents
Surface treatment process for small stainless steel casting Download PDFInfo
- Publication number
- CN110695772A CN110695772A CN201910861313.9A CN201910861313A CN110695772A CN 110695772 A CN110695772 A CN 110695772A CN 201910861313 A CN201910861313 A CN 201910861313A CN 110695772 A CN110695772 A CN 110695772A
- Authority
- CN
- China
- Prior art keywords
- casting
- washing
- pickling
- stainless steel
- surface treatment
- 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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a surface treatment process of a small stainless steel casting, wherein the small stainless steel casting to be treated can be subjected to surface treatment only by S1. shot blasting, S2. sand blasting, S3. washing, S4. acid washing, S5. secondary acid washing, S6. polishing and S7. secondary washing. The invention can finish the surface treatment of the casting only by simple working procedures, and the treated casting has higher and stable quality, thereby providing a reliable and normative method for the industry and reducing the production cost.
Description
Technical Field
The invention relates to the field of metal surface treatment, in particular to a surface treatment process of a small stainless steel casting.
Background
The surface treatment is a process method for adding or subtracting on the surface of a base material to change the physical and chemical properties of the base material. The purpose of the surface treatment is to meet the requirements of corrosion resistance, wear resistance, decoration or other special functions of the product. The prior process for treating the surface of the stainless steel casting is complex, and has no unified specification and standard, the treated casting has uneven quality, and the production efficiency is reduced due to excessive repeated procedures, so that the labor burden of workers is increased, and the cost is increased.
Disclosure of Invention
In view of the problems of the prior art, the present invention aims to provide a surface treatment process for small stainless steel castings, which can be used for simply and conveniently performing surface treatment on small stainless steel castings and can enable the castings to have high quality.
In order to achieve the purpose, the invention adopts the technical scheme that: a surface treatment process for small stainless steel castings comprises the following steps:
s1, shot blasting: putting the small stainless steel casting to be treated into a drum type shot blasting machine, and performing shot blasting by using steel sand with the grain diameter of 0.45-0.55 mm;
s2, sand blasting: performing sand blasting treatment on the cast after the shot blasting, wherein the sand blasting raw material is quartz sand with the particle size of 0.1-0.3 mm;
s3, washing: washing the sand-blasted casting, wherein the washing liquid is a mixed solution containing 3% of hydrogen peroxide and 2% of ethanol;
s4, acid washing: placing the washed casting into a pickling tank, and pickling with 43-52% hydrochloric acid solution for 2 minutes;
s5, secondary acid washing: placing the casting subjected to hydrochloric acid pickling into a secondary pickling tank, and pickling by using a mixed solution containing 10% of hydrofluoric acid, 5% of sulfuric acid and 5% of hydrogen peroxide for 3 minutes;
s6, polishing: polishing the casting subjected to the secondary pickling by using a polishing machine and abrasive paper;
s7, secondary washing: and (4) washing the polished casting by using clear water to finish the surface treatment of the small stainless steel casting.
Further, in the pickling step of S4, a corrosion inhibitor is added to prevent the casting from being excessively oxidized by the pickling solution, and the corrosion inhibitor is a composite agent containing 1% of sodium sulfite and 2% of calcium silicate.
The surface treatment process of the small stainless steel casting can finish the surface treatment of the casting only by simple procedures, and the treated casting has high and stable quality and simultaneously reduces the production cost.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
A surface treatment process for small stainless steel castings comprises the following steps:
s1, shot blasting: putting a small stainless steel casting to be treated into a drum type shot blasting machine, and performing shot blasting by using steel sand with the grain diameter of 0.45 mm;
s2, sand blasting: performing sand blasting treatment on the cast after shot blasting, wherein the sand blasting raw material is quartz sand with the particle size of 0.1 mm;
s3, washing: washing the sand-blasted casting, wherein the washing liquid is a mixed solution containing 3% of hydrogen peroxide and 2% of ethanol;
s4, acid washing: placing the washed casting into a pickling tank, and pickling with 43-52% hydrochloric acid solution for 2 minutes;
s5, secondary acid washing: placing the casting subjected to hydrochloric acid pickling into a secondary pickling tank, and pickling by using a mixed solution containing 10% of hydrofluoric acid, 5% of sulfuric acid and 5% of hydrogen peroxide for 3 minutes;
s6, polishing: polishing the casting subjected to the secondary pickling by using a polishing machine and abrasive paper;
s7, secondary washing: and (4) washing the polished casting by using clear water to finish the surface treatment of the small stainless steel casting.
As a further preferable scheme, in the pickling step of S4, a corrosion inhibitor is added to prevent the castings from being excessively oxidized by the pickling solution, and the corrosion inhibitor is a composite agent containing 1% of sodium sulfite and 2% of calcium silicate.
The small stainless steel casting subjected to surface treatment by the step has low cost and excellent quality.
Example 2
A surface treatment process for small stainless steel castings comprises the following steps:
s1, shot blasting: putting the small stainless steel casting to be treated into a drum type shot blasting machine, and performing shot blasting by using steel sand with the particle size of 0.55 mm;
s2, sand blasting: performing sand blasting treatment on the cast after shot blasting, wherein the sand blasting raw material is quartz sand with the particle size of 0.3 mm;
s3, washing: washing the sand-blasted casting, wherein the washing liquid is a mixed solution containing 3% of hydrogen peroxide and 2% of ethanol;
s4, acid washing: placing the washed casting into a pickling tank, and pickling with 43-52% hydrochloric acid solution for 2 minutes;
s5, secondary acid washing: placing the casting subjected to hydrochloric acid pickling into a secondary pickling tank, and pickling by using a mixed solution containing 10% of hydrofluoric acid, 5% of sulfuric acid and 5% of hydrogen peroxide for 3 minutes;
s6, polishing: polishing the casting subjected to the secondary pickling by using a polishing machine and abrasive paper;
s7, secondary washing: and (4) washing the polished casting by using clear water to finish the surface treatment of the small stainless steel casting.
As a further preferable scheme, in the pickling step of S4, a corrosion inhibitor is added to prevent the castings from being excessively oxidized by the pickling solution, and the corrosion inhibitor is a composite agent containing 1% of sodium sulfite and 2% of calcium silicate.
The small stainless steel casting subjected to surface treatment by the step has low cost and excellent quality.
Claims (2)
1. A surface treatment process for a small stainless steel casting is characterized by comprising the following steps:
s1, shot blasting: putting the small stainless steel casting to be treated into a drum type shot blasting machine, and performing shot blasting by using steel sand with the grain diameter of 0.45-0.55 mm;
s2, sand blasting: performing sand blasting treatment on the cast after the shot blasting, wherein the sand blasting raw material is quartz sand with the particle size of 0.1-0.3 mm;
s3, washing: washing the sand-blasted casting, wherein the washing liquid is a mixed solution containing 3% of hydrogen peroxide and 2% of ethanol;
s4, acid washing: placing the washed casting into a pickling tank, and pickling with 43-52% hydrochloric acid solution for 2 minutes;
s5, secondary acid washing: placing the casting subjected to hydrochloric acid pickling into a secondary pickling tank, and pickling by using a mixed solution containing 10% of hydrofluoric acid, 5% of sulfuric acid and 5% of hydrogen peroxide for 3 minutes;
s6, polishing: polishing the casting subjected to the secondary pickling by using a polishing machine and abrasive paper;
s7, secondary washing: and (4) washing the polished casting by using clear water to finish the surface treatment of the small stainless steel casting.
2. The process of claim 1, wherein in the step of pickling in S4, a corrosion inhibitor is added to prevent the castings from being excessively oxidized by the pickling solution, and the corrosion inhibitor is a compound agent containing 1% sodium sulfite and 2% calcium silicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861313.9A CN110695772A (en) | 2019-09-12 | 2019-09-12 | Surface treatment process for small stainless steel casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861313.9A CN110695772A (en) | 2019-09-12 | 2019-09-12 | Surface treatment process for small stainless steel casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110695772A true CN110695772A (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910861313.9A Pending CN110695772A (en) | 2019-09-12 | 2019-09-12 | Surface treatment process for small stainless steel casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110695772A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139861A (en) * | 2020-09-27 | 2020-12-29 | 海口锦嘉成实业有限公司 | Steel surface rust removal method |
-
2019
- 2019-09-12 CN CN201910861313.9A patent/CN110695772A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139861A (en) * | 2020-09-27 | 2020-12-29 | 海口锦嘉成实业有限公司 | Steel surface rust removal method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200117 |
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| WD01 | Invention patent application deemed withdrawn after publication |