CN104924220A - Method for cleaning surface of large stainless steel casting - Google Patents
Method for cleaning surface of large stainless steel casting Download PDFInfo
- Publication number
- CN104924220A CN104924220A CN201510196437.1A CN201510196437A CN104924220A CN 104924220 A CN104924220 A CN 104924220A CN 201510196437 A CN201510196437 A CN 201510196437A CN 104924220 A CN104924220 A CN 104924220A
- Authority
- CN
- China
- Prior art keywords
- shot
- ball blast
- foundry goods
- cleaning
- ing
- 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.)
- Pending
Links
Classifications
-
- 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
- B24C1/086—Descaling; Removing coating films
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to a method for cleaning the surface of a large stainless steel casting, in particular to a method for cleaning the surface of a large stainless steel casting made of ZG06Cr13Ni4Mo. The method comprises the following steps that the casting is assembled, steel shots are selected, the shots are thrown, and the arrangement angle of the casting is adjusted to be 20-40 degrees; after the shots of the whole casting are thrown by executing the above steps repeatedly, floating dust and chip on the casting are removed through dry and oilless compressed air, and the surface is prevented from being touched by hands after cleaning. The method is simple, easy to implement, safe and reliable; cleaning efficiency is high, and cost is low; it is proved through actual batch applications that the effect is remarkable.
Description
Technical field
The present invention relates to a kind of method of stainless cast steel part removing surface, especially relate to the large-size stainless steel cast(ing) surface method for cleaning that a kind of material is ZG06Cr13Ni4Mo.
Background technology
Material is the blade of large-sized water turbine of ZG06Cr13Ni4Mo, is a kind of large-size stainless steel foundry goods, and its profile molded line is in " X " shape, and section configuration is wing, belongs to large-scale blades.This material cast product needs to carry out high temperature normalizing and adds temper, normalizing temperature about 1050 DEG C, temperature 610 ~ 650 DEG C.Because casting section thickness, so heat treatment temperature retention time is all at about 12h.After high temperature long time treatment, blade surface often has the oxide layer of one deck densification.Through detecting chemical examination, oxide layer main component is the indissoluble materials such as chromium oxide, nickel oxide, oxidation siderochrome, and thickness is about 0.1 ~ 0.3mm, and hardness is more than HRC56.If do not remove this oxide layer and directly process foundry goods, then processing difficulties, and the well damage to cutter, foundry goods also cannot carry out nondestructive inspection simultaneously.
It is adopt grinder buffing that traditional method for cleaning of current employing mainly contains two kinds: one, because this oxide layer hardness is large, thicker again and fine and close, use grinder buffing difficulty, usually be a blade of 5245 × 4705 × 2406mm for overall size, 2 people are needed to spend 3 order of classes or grades at school, each order of classes or grades at school 8h, could by clean for oxide layer relief grinding.Cleaning efficiency is very low, and grinding wheel consumption is also comparatively large, and consumables cost is about 500 yuan; Two is adopt the deep-etching of mixed acid chemistry to clear up, but this method cost is large, and corrosivity is comparatively large, contaminated environment, also very large to human injury, is eliminated gradually.
Also do not overcome the method for above-mentioned defect at present.
Summary of the invention
The object of the invention is the defect overcoming prior art, provide a kind of simple, safe and reliable, cleaning efficiency is high, and cost is low, is used, a kind of large-size stainless steel cast(ing) surface method for cleaning of Be very effective by reality batch.
The present invention realizes in the following way:
A kind of large-size stainless steel cast(ing) surface method for cleaning, is characterized in that: the method comprises the following steps:
A. piece installing: the foundry goods that will clear up is placed on rotatable ball blast workbench, then by steady for foundry goods advance expenditure;
B. shot is selected: in conjunction with oxide layer hardness and the final surface roughness of foundry goods and smoothness requirements, selects shot;
C. ball blast: add above-mentioned shot at shot-blast apparatus and carry out ball blast;
D. adjusting foundry goods angles is 20-40 degree, repeats above step c ball blast again;
E., after whole foundry goods ball blast terminates, with the floating dust on dry, that nothing is oily compressed air removing foundry goods and chip, the not handy hand in the surface after cleaning touches;
Described shot composition and content are C:0.40 ~ 0.75, Mn:0.40 ~ 1.20, Si:0.1 ~ 0.3, P≤0.05, S≤0.05, shot diameter is selected to be 1.4 ~ 2.0mm, length is 1.2 ~ 1.5 times of diameter, and the hardness of shot controls at 45 ~ 55HRC, requires that shot self is without embroidery, without oil, surface cleaning, drying, above-mentioned content is mass percent;
Described ball blast process is that compressed air that first inject process is used is by cooling device and oil water separator process, to ensure compressed-air actuated drying, without oil, compressed air pressure is 0.5 ~ 0.7MPa, and nozzle and cast(ing) surface keep the distance of 100 ~ more than 300mm, the angle of adjustment nozzle spray direction and cast(ing) surface normal remains between 15 ~ 30 °, after above preparation completes, enforcement ball blast operates, each nozzle ball blast amount is 150 ~ 200kg/min, impeller head impeller diameter is between φ 360 ~ 380mm, shot ejection velocity > 90m/s, the foundry goods ball blast time is set as 40 ~ 60min.
The present invention has following effect:
1) simple, safe and reliable, cleaning efficiency is high: the method comprises the following steps: piece installing, shot selection, ball blast, adjustment foundry goods angles are 20-40 degree, after repeating above step c ball blast, whole foundry goods ball blast terminating again, with the floating dust on dry, that nothing is oily compressed air removing foundry goods and chip, the not handy hand in the surface after cleaning touches; The present invention utilizes shot-blast apparatus, is sprayed onto on foundry goods, the impact friction through between shot and foundry goods high-speed uniform, is cleaned out the shot with certain degree of hardness by stainless cast steel part surface oxide layer.
2) cost is low, by actual batch utilization, Be very effective: with the blade of large-sized water turbine of ZG06Cr13Ni4Mo material of the present invention, its overall size is 5245 × 4705 × 2406mm.Clear up according to above-mentioned steps, whole cast(ing) surface oxide layer is cleaned out and is spilt the metal color of stainless cast steel part, and surface roughness, fineness all can reach requirement.Meanwhile, complete above work, only need operating personnel 1, need working time 80 ~ 120min, greatly saved manpower, improve production efficiency.And consumables cost is about 200 yuan, reduce production cost.
Detailed description of the invention
A kind of large-size stainless steel cast(ing) surface method for cleaning, the method comprises the following steps:
A. piece installing: foundry goods is placed on rotatable ball blast workbench, then by steady for foundry goods advance expenditure.
B. shot is selected: in conjunction with oxide layer hardness and the final surface roughness of foundry goods and smoothness requirements, select suitable shot.Its composition and content are mass percent %, mainly C:0.40 ~ 0.75, Mn:0.40 ~ 1.20, Si:0.1 ~ 0.3, P≤0.05, S≤0.05, and select shot diameter to be 1.4 ~ 2.0mm, length is 1.2 ~ 1.5 times of diameter.The hardness of shot controls at 45 ~ 55HRC.Require that shot self is without embroidery, without oil, surface cleaning, drying.
C. ball blast: add shot at shot-blast apparatus.Inject process compressed air used is by cooling device and oil water separator process, and to ensure compressed-air actuated drying, without oil, compressed air pressure is 0.5 ~ 0.7MPa.
Nozzle and cast(ing) surface keep the distance of 100 ~ more than 300mm.
The angle of adjustment nozzle spray direction and cast(ing) surface normal remains between 15 ~ 30 °.
After above preparation completes, implement ball blast operation.Each nozzle ball blast amount is 150 ~ 200kg/min, and impeller head impeller diameter is between φ 360 ~ 380mm, and shot ejection velocity > 90m/s, the foundry goods ball blast time is set as 40 ~ 60min.
D. adjusting foundry goods angles is 20-40 degree, repeats above step c ball blast again.
E., after whole foundry goods ball blast terminates, with the floating dust on dry, that nothing is oily compressed air removing foundry goods and chip, the not handy hand in the surface after cleaning touches.
Claims (3)
1. a large-size stainless steel cast(ing) surface method for cleaning, is characterized in that: the method comprises the following steps:
A. piece installing: the foundry goods that will clear up is placed on rotatable ball blast workbench, then by steady for foundry goods advance expenditure;
B. shot is selected: in conjunction with oxide layer hardness and the final surface roughness of foundry goods and smoothness requirements, selects shot;
C. ball blast: add above-mentioned shot at shot-blast apparatus and carry out ball blast;
D. adjusting foundry goods angles is 20-40 degree, repeats above step c ball blast again;
E., after whole foundry goods ball blast terminates, with the floating dust on dry, that nothing is oily compressed air removing foundry goods and chip, the not handy hand in the surface after cleaning touches.
2. a kind of large-size stainless steel cast(ing) surface method for cleaning as claimed in claim 1, it is characterized in that: described shot composition and content are C:0.40 ~ 0.75, Mn:0.40 ~ 1.20, Si:0.1 ~ 0.3, P≤0.05, S≤0.05, select shot diameter to be 1.4 ~ 2.0mm, length is 1.2 ~ 1.5 times of diameter, the hardness of shot controls at 45 ~ 55HRC, require shot self without embroidery, without oil, surface cleaning, drying, above-mentioned content is mass percent.
3. a kind of large-size stainless steel cast(ing) surface method for cleaning as claimed in claim 1, it is characterized in that: described ball blast process is that compressed air that first inject process is used is by cooling device and oil water separator process, to ensure compressed-air actuated drying, without oil, compressed air pressure is 0.5 ~ 0.7MPa, and nozzle and cast(ing) surface keep the distance of 100 ~ more than 300mm, the angle of adjustment nozzle spray direction and cast(ing) surface normal remains between 15 ~ 30 °, after above preparation completes, enforcement ball blast operates, each nozzle ball blast amount is 150 ~ 200kg/min, impeller head impeller diameter is between φ 360 ~ 380mm, shot ejection velocity > 90m/s, the foundry goods ball blast time is set as 40 ~ 60min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196437.1A CN104924220A (en) | 2015-04-23 | 2015-04-23 | Method for cleaning surface of large stainless steel casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196437.1A CN104924220A (en) | 2015-04-23 | 2015-04-23 | Method for cleaning surface of large stainless steel casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104924220A true CN104924220A (en) | 2015-09-23 |
Family
ID=54111803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510196437.1A Pending CN104924220A (en) | 2015-04-23 | 2015-04-23 | Method for cleaning surface of large stainless steel casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104924220A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107891374A (en) * | 2017-11-14 | 2018-04-10 | 江苏飞腾铸造机械有限公司 | A kind of Shot Blasting technique |
| CN108081153A (en) * | 2017-12-26 | 2018-05-29 | 苏州贝尔纳德铁路设备有限公司 | A kind of derusting method for rail vehicles wheel pair |
| CN112518593A (en) * | 2020-12-03 | 2021-03-19 | 天津众达精密机械有限公司 | Shot blasting cleaning method for machining castings |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03196969A (en) * | 1989-12-22 | 1991-08-28 | Sinto Brator Co Ltd | Shot peening method and device |
| CN101337338A (en) * | 2008-05-30 | 2009-01-07 | 大丰市大奇金属磨料有限公司 | Reinforced steel shot |
| CN202622582U (en) * | 2012-06-29 | 2012-12-26 | 福清市晨晖五金制品有限公司 | Shot blasting machine for cleaning casting surface |
| CN103286696A (en) * | 2013-06-14 | 2013-09-11 | 林金风 | Method for removing oxide layer of medium-high carbon wire rod |
-
2015
- 2015-04-23 CN CN201510196437.1A patent/CN104924220A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03196969A (en) * | 1989-12-22 | 1991-08-28 | Sinto Brator Co Ltd | Shot peening method and device |
| CN101337338A (en) * | 2008-05-30 | 2009-01-07 | 大丰市大奇金属磨料有限公司 | Reinforced steel shot |
| CN202622582U (en) * | 2012-06-29 | 2012-12-26 | 福清市晨晖五金制品有限公司 | Shot blasting machine for cleaning casting surface |
| CN103286696A (en) * | 2013-06-14 | 2013-09-11 | 林金风 | Method for removing oxide layer of medium-high carbon wire rod |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107891374A (en) * | 2017-11-14 | 2018-04-10 | 江苏飞腾铸造机械有限公司 | A kind of Shot Blasting technique |
| CN108081153A (en) * | 2017-12-26 | 2018-05-29 | 苏州贝尔纳德铁路设备有限公司 | A kind of derusting method for rail vehicles wheel pair |
| CN112518593A (en) * | 2020-12-03 | 2021-03-19 | 天津众达精密机械有限公司 | Shot blasting cleaning method for machining castings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5782338B2 (en) | End processing method for plate material and blasting apparatus | |
| CN104924220A (en) | Method for cleaning surface of large stainless steel casting | |
| CN105290892B (en) | A kind of sapphire ingot excircle machining mechanism of centerless grinder | |
| CN108393741A (en) | A kind of nitrogen stream penetrates hard turning processing unit (plant) and cutting process | |
| CN105666337B (en) | A kind of multiple tracks sandblasting dephosphorization process | |
| CN107671736A (en) | One kind improves steel plate impeller blasting technique | |
| CN102716922A (en) | Large-diameter metal bar surface jet flow descaling system and method | |
| CN103801979A (en) | Dry cutting method for dry ice cooling | |
| CN105619256A (en) | Steel surface sand blasting process | |
| CN105945657A (en) | Multifunctional ultrasonic vibration grinding mechanism | |
| CN108214188A (en) | A kind of burr remover of timber | |
| CN107457707A (en) | A kind of titanium or titanium alloy surface aoxidize layer minimizing technology | |
| CN208867003U (en) | A kind of strip descaling device based on impact | |
| CN204134946U (en) | Handheld water Turbine Runner gap polishing cleaner | |
| CN206010720U (en) | Emery wheel groove cleaning device when a kind of glass substrate grinds | |
| CN207480400U (en) | A kind of novel sand blasting machine | |
| CN104647229B (en) | Hollow self-cooled millstone and cooling method | |
| CN204686051U (en) | A kind of double-sided turning cutter | |
| CN102764778A (en) | Inner surface and outer surface jet flow descaling system and method for big-diameter metal pipe wall | |
| CN105598849A (en) | Sand injection method for metal materials | |
| RU2005136898A (en) | METHOD FOR ROUNDING EDGES OF PARTS | |
| CN207448101U (en) | A kind of novel glass angle lap machine | |
| CN209754926U (en) | Throwing head and shot blasting machine with same | |
| CN107053339A (en) | A kind of vacuum coating circular pressing and cutting cutting die and its processing technology | |
| CN105189039B (en) | For the method on processing object surface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |
|
| RJ01 | Rejection of invention patent application after publication |