CN103240680A - Steel plate pre-treating method - Google Patents

Steel plate pre-treating method Download PDF

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Publication number
CN103240680A
CN103240680A CN2013100767856A CN201310076785A CN103240680A CN 103240680 A CN103240680 A CN 103240680A CN 2013100767856 A CN2013100767856 A CN 2013100767856A CN 201310076785 A CN201310076785 A CN 201310076785A CN 103240680 A CN103240680 A CN 103240680A
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China
Prior art keywords
steel plate
spray gun
preprocess
rollgang
shower nozzle
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CN2013100767856A
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Chinese (zh)
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CN103240680B (en
Inventor
刘俊梅
黄永生
李德堂
王化明
陈林
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Zhejiang Ocean University ZJOU
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Zhejiang Ocean University ZJOU
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Abstract

The invention discloses a steel plate pre-treating method. The steel plate pre-treating method comprises the following steps of: hanging a steel plate on a conveyer roller which is used for conveying the steel plate in a multi-roller leveler for leveling the steel plate, conveying the steel plate to horizontally pass through a spray gun array for spraying high-pressure abrasive mixed liquid to the upper surface and the lower surface of the steel plate at a certain running speed through the conveyor roller, wherein the spray gun array is composed of a plurality of spray guns, washing the steel plate by the water added with corrosion inhibitor, conveying the washed steel plate to enter a first drying chamber through the conveyor roller, drying the steel plate, conveying the steel plate to enter a coating chamber through the conveyor roller, coating the maintenance primer on the steel plate by using a tool, conveying the steel plate to enter the second drying chamber through the conveyor roller, drying, conveying the steel plate to the outside of the pre-treatment pipeline through the conveyer roller. The steel plate pre-treating method disclosed by the invention is good in pre-treatment effect, high in processing efficiency, easy to operate and suitable for the processing demands of the work-piece in different materials and different thicknesses.

Description

The steel plate preprocess method
Technical field
The present invention relates to the shipbuilding technology field, it is good especially to relate to a kind of pretreating effect, the steel plate preprocess method that treatment effeciency is high.
Background technology
At present, adopt the impeller blasting method for pretreating that shipbuilding is carried out preliminary treatment with steel plate usually, use ballasting rust remover that steel plate is eliminated rust in the impeller blasting preprocessing process.
The impeller blasting method for pretreating has following shortcoming:
Every technical parameter of the surface of steel plate after the Shot Blasting all can't satisfy the requirement of the new protective finish performance standard of promulgating of International Maritime Organization; need carry out after-treatment to pretreated steel plate, cause the appearance of the problem that the pretreated efficient of steel plate is low, cost is high.
Chinese patent mandate publication number CN202079503U authorizes disclose a kind of steel plate pre-treatment production line open day on March 18th, 2011, comprising: super shot blasting cleaning chamber, and it is the closed chamber body, and many impeller heads are installed on the outer wall of this super shot blasting cleaning chamber; Automatic paint-spraying booth; Drying chamber; Rollgang, it comprises successively and to connect and for delivery of charging rollgang, super shot blasting cleaning chamber roller-way, transition rollgang and the discharging rollgang of processing work, it is indoor that the super shot blasting cleaning chamber roller-way is positioned at impeller blasting, is provided with described automatic paint-spraying booth and drying chamber successively between described transition rollgang and the discharging rollgang; Following longitudinal spiral conveyer, the one end is connected with the ball material outlet of super shot blasting cleaning chamber; Following horizontal conveying worm, the one end is connected with the other end of following longitudinal spiral conveyer; Bucket elevator, it has feeding mouth and discharging opening, and this feeding mouth is connected with the other end of following horizontal conveying worm; Go up horizontal conveying worm, the one end is connected with the discharging opening of bucket elevator; Shot-sand separator, it has the Disengagement zone and the mouth of giving a dinner for a visitor from afar, and this Disengagement zone is connected with the other end of last horizontal conveying worm; And deduster, its with shot-sand separator give a dinner for a visitor from afar mouthful and super shot blasting cleaning chamber is connected.This utility model has the weak effect that once eliminates rust, the inefficient deficiency of steel plate preliminary treatment.
Summary of the invention
The present invention is the deficiency poor for the pretreating effect that overcomes steel plate preprocess method of the prior art, that efficient is low, cost is high, provides a kind of pretreating effect good, the steel plate preprocess method that treatment effeciency is high.
To achieve these goals, the present invention is by the following technical solutions:
A kind of steel plate preprocess method comprises the steps:
(1-1) steel plate is hung onto on the rollgang;
(1-2) rollgang is sent steel plate into the multiple roll level(l)ing machine, steel plate is carried out leveling handle;
(1-3) rollgang transport steel plate with certain speed of service level by towards the spray gun array of steel plate upper surface and lower surface inject high pressure abrasive material mixed liquor, described spray gun array is arranged by several spray guns and is constituted;
(1-4) with the water that adds corrosion inhibiter steel plate is washed, rollgang transports steel plate after the flushing and enters first hothouse and dry;
(1-5) rollgang transports steel plate and enters spray booth, and tool using is at steel plate spraying maintenance priming paint;
(1-6) rollgang transports steel plate and enters the secondary drying chamber and dry;
(1-7) rollgang transports the pretreated stream waterline with steel plate.
Traditional impeller blasting method for pretreating is owing to be subjected to the restriction of ball blast size, and ball blast does not arrive on some position of surface of steel plate, and perhaps the impact force of this place's ball blast is not enough to the rust stain is removed.
And steel plate preprocess method of the present invention is to use the high-pressure abrasive material mixed liquor that the upper and lower surface of steel plate is sprayed, and the abrasive material mixed liquor can arrive any position of surface of steel plate, does not have the position that is not injected into, and the stressed of surface of steel plate is uniform.
The steel plate that the impeller blasting method for pretreating was handled is not owing to satisfy the requirement of the new protective finish performance standard of promulgating of International Maritime Organization; wherein there is 70% steel plate need carry out the secondary preliminary treatment; the steel plate that steel plate preprocess method of the present invention was handled does not need to carry out after-treatment substantially; improve preliminary treatment efficient, reduced production cost.
The steel plate of common impeller blasting method for pretreating needs in advance steel plate to be carried out heat treated, and the oil stain of surface of steel plate is removed, because rust cleaning of the present invention is effective, most of steel plate can not carry out heat treated in advance, has improved production efficiency.
As preferably, described spray gun array comprises spray gun array and following spray gun array, and the shower nozzle of last spray gun array is downward, and the shower nozzle of following spray gun array makes progress;
Upper and lower spray gun array includes left spray gun row and right spray gun row, and spray gun is listed as by 5 to 8 spray guns and constitutes, and the spray gun of left spray gun row and right spray gun row is interspersed.
Rollgang comprises several homodromal horizontal rollers, and the shower nozzle of following spray gun array is towards the interval location of adjacent two horizontal rollers.
As preferably, described spray gun comprises the tubulose body of a gun, rotary connector and spherical shower nozzle, and described body of a gun front end and rotary connector one end are rotationally connected, and the rotary connector other end is fixedlyed connected with shower nozzle; The shower nozzle front portion comprises 3 to 5 nozzles.
The diameter of nozzle is 6 millimeters to 12 millimeters.Be the gases at high pressure of 25 MPa to 40 MPas from body of a gun rear end input pressure, from body of a gun front side wall input abrasive material mixed liquor; Nozzle is to steel plate ejection high-pressure abrasive material mixed liquor, and under the effect of the reaction force of jet, shower nozzle rotates at a high speed.The spraying coverage coefficient reaches more than 5, satisfies the requirement of spraying coverage coefficient>2 of the new protective finish performance standard of promulgating of International Maritime Organization.
As preferably, the axis of described nozzle and horizontal direction angle be 30 degree to 70 degree, the rotating speed of shower nozzle is 180 rev/mins to 300 rev/mins.
Can change axis and the horizontal direction angle of nozzle by changing shower nozzle, thereby satisfy the rust cleaning of the surface of steel plate of different pollution levels.
As preferably, the flow of the abrasive material mixed liquor of described nozzle ejection is 25 liters/minute to 32 liters/minute, and the speed of the abrasive material mixed liquor of nozzle ejection is 160 meter per second to 200 meter per seconds.
The flow of abrasive material mixed liquor and the restriction of speed guarantee that the abrasive material mixed liquor of nozzle ejection can effectively remove the rust stain of surface of steel plate.
As preferably, the jet area angle of spray gun is that 30 degree are to 150 degree.
As preferably, the spacing between the described left and right spray gun row is 0.3 meter to 0.4 meter.
As preferably, described nozzle to the distance of steel plate is 5 centimetres to 15 centimetres.
As preferably, step (1-2) and (1-3) between also comprise the steps:
Use the surface of steel plate after oxyacetylene torch sprays leveling.
The heavier steel plate of oil stain and spot can carry out the flame combustion scrubbing earlier, and then carries out processing of rust removing, guarantees the steel plate pretreating effect.
As preferably, step (1-3) light plate is 2 meters/minute to 8 meters/minute by the speed of service of spray gun array.
Therefore, the present invention has following beneficial effect: (1) pretreating effect is good; (2) working (machining) efficiency height; (3) simple to operate; (4) greatly improve dust to the pollution of environment and to the harm of operator ' s health, do not needed to be equipped with in addition dust removal by ventilation equipment; (5) can adapt to the processing request of unlike material and different-thickness workpiece.
Description of drawings
Fig. 1 is a kind of structural representation of rust cleaning of the present invention chamber;
Fig. 2 is the another kind of structural representation of rust cleaning of the present invention chamber;
Fig. 3 is a kind of flow chart of embodiments of the invention 1;
Fig. 4 is a kind of flow chart of embodiments of the invention 2.
Among the figure: horizontal roller 1, last spray gun array 2, following spray gun array 3, nozzle 4, the body of a gun 5, rotary connector 6, spherical shower nozzle 7, rust cleaning chamber 8, steel plate 9, built-in beam 10.
The specific embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment 1
The pretreated stream waterline comprises electromagnetic lifter, rollgang, air compressor, abrasive material mixing liquid supplying device, multiple roll level(l)ing machine, rust cleaning chamber, flusher, spray booth, first hothouse and secondary drying chamber.
As shown in Figure 1, be positioned at the indoor rollgang of rust cleaning and comprise spaced 3 horizontal rollers 1.Steel plate 9 is positioned on the horizontal roller.
Horizontal roller top is provided with spray gun array 2, and horizontal roller below is provided with down spray gun array 3, and the shower nozzle of last spray gun array is downward, and the shower nozzle of following spray gun array upwards; The shower nozzle of following spray gun array is towards the interval location of adjacent two horizontal rollers.
As shown in Figure 2, upper and lower spray gun array includes left spray gun row and right spray gun row, and left spray gun is listed as by 6 spray guns and constitutes, and right spray gun is listed as by 7 spray guns and constitutes; The spray gun of left side spray gun row and right spray gun row is interspersed.The spray gun built-in beam 10 indoor with being located at rust cleaning is connected, and by the height up and down of mobile built-in beam, can adjust nozzle to the distance of steel plate.
Spray gun comprises the tubulose body of a gun 5, rotary connector 6 and spherical shower nozzle 7, and body of a gun front end and rotary connector one end are rotationally connected, and the rotary connector other end is fixedlyed connected with shower nozzle; The shower nozzle front portion is provided with 3 nozzles 4.The air inlet pipe of air compressor is connected with body of a gun rear end, and the pressure of the air of input is 40 MPas, and abrasive material mixing liquid supplying device is connected with body of a gun front side wall by feed tube.
The axis of nozzle and horizontal direction angle are 45 degree, and the rotating speed of shower nozzle is 240 rev/mins.
The flow of the abrasive material mixed liquor of nozzle ejection is 30 liters/minute, and the speed of the abrasive material mixed liquor of nozzle ejection is 180 meter per seconds.
The jet area angle of spray gun is 80 degree, and the spacing between the left and right spray gun row is 0. 4 meters.Nozzle to the distance of steel plate is 8 centimetres.
Embodiment as shown in Figure 3 is a kind of steel plate preprocess method, comprises the steps:
Step 100 hangs onto steel plate on the rollgang with electromagnetic lifter;
Step 200, rollgang is sent steel plate into the multiple roll level(l)ing machine, steel plate is carried out leveling handle;
Step 300, horizontal roller rotates counterclockwise with 6 meters/minute the speed of service, steel plate moves horizontally from right to left, the first, down the nozzle of the spray gun of spray gun array is 30 liters/minute to the upper and lower surface of steel plate with flow respectively, speed is 180 meter per second abrasive blasting mixed liquors, and the abrasive blasting mixed liquor comprises water, olivine sand and diamond dust; The content of olivine sand is 8%, and it is 6% that the content of diamond dust changes into; Abrasive material is of a size of 50 orders.
Shower nozzle rotation under the recoil moment of abrasive material mixed liquor drives forms multi beam, multi-angle, the different high-pressure rotary water jet of intensity.Oil stain on the steel plate, dust, rust matter, oxide skin are impacted;
Step 400, flusher washes steel plate with the water that adds corrosion inhibiter; Being used for the water of water of flushing and the ratio of corrosion inhibiter is 99:1, and corrosion inhibiter is natrium nitrosum.
Step 450, rollgang are transported steel plate after the flushing and are entered first hothouse and dry;
Step 500, rollgang transportation steel plate enters spray booth, and tool using is at steel plate spraying maintenance priming paint;
Step 600, rollgang transportation steel plate enters the secondary drying chamber dries;
Step 700, rollgang transports the pretreated stream waterline with steel plate.
Embodiment 2
Comprise all structure divisions and the step part implemented in 1 among the embodiment 2.As shown in Figure 4, the step part among the embodiment 2 in embodiment 1, further comprising the steps of:
Step 250 is used the surface of steel plate after oxyacetylene torch sprays leveling.Surface of steel plate temperature through burning reaches 40 degree.
Follow-up processing of rust removing is carried out after cleaning through flame combustion again in the surface of the steel plate that oil stain and spot are heavier, guarantees the steel plate pretreating effect.
Should be understood that present embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.

Claims (10)

1. a steel plate preprocess method is characterized in that, comprises the steps:
(1-1) steel plate is hung onto on the rollgang;
(1-2) rollgang is sent steel plate into the multiple roll level(l)ing machine, steel plate is carried out leveling handle;
(1-3) rollgang transport steel plate with certain speed of service level by towards the spray gun array of steel plate upper surface and lower surface inject high pressure abrasive material mixed liquor, described spray gun array is arranged by several spray guns and is constituted;
(1-4) with the water that adds corrosion inhibiter steel plate is washed, rollgang transports steel plate after the flushing and enters first hothouse and dry;
(1-5) rollgang transports steel plate and enters spray booth, and tool using is at steel plate spraying maintenance priming paint;
(1-6) rollgang transports steel plate and enters the secondary drying chamber and dry;
(1-7) rollgang transports the pretreated stream waterline with steel plate.
2. steel plate preprocess method according to claim 1 is characterized in that, described spray gun array comprises spray gun array (2) and following spray gun array (3), and the shower nozzle of last spray gun array is downward, and the shower nozzle of following spray gun array upwards;
Upper and lower spray gun array includes left spray gun row and right spray gun row, and spray gun is listed as by 5 to 8 spray guns and constitutes, and the spray gun of left spray gun row and right spray gun row is interspersed.
3. steel plate preprocess method according to claim 1, it is characterized in that, described spray gun comprises the tubulose body of a gun (5), rotary connector (6) and spherical shower nozzle (7), and described body of a gun front end and rotary connector one end are rotationally connected, and the rotary connector other end is fixedlyed connected with shower nozzle; The shower nozzle front portion comprises 3 to 5 nozzles (4).
4. steel plate preprocess method according to claim 3 is characterized in that, the axis of described nozzle and horizontal direction angle be 30 the degree to 70 the degree, the rotating speed of shower nozzle is 180 rev/mins to 300 rev/mins.
5. steel plate preprocess method according to claim 3 is characterized in that, the flow of the abrasive material mixed liquor of described nozzle ejection is 25 liters/minute to 32 liters/minute, and the speed of the abrasive material mixed liquor of nozzle ejection is 160 meter per second to 200 meter per seconds.
6. steel plate preprocess method according to claim 1 is characterized in that, the jet area angle of spray gun is that 30 degree are to 150 degree.
7. steel plate preprocess method according to claim 2 is characterized in that, the spacing between the described left and right spray gun row is 0.3 meter to 0.4 meter.
8. steel plate preprocess method according to claim 3 is characterized in that, described nozzle to the distance of steel plate is 5 centimetres to 15 centimetres.
9. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described steel plate preprocess methods, it is characterized in that, step (1-2) and (1-3) between also comprise the steps:
Use the surface of steel plate after oxyacetylene torch sprays leveling.
10. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described steel plate preprocess methods, it is characterized in that step (1-3) light plate is 2 meters/minute to 8 meters/minute by the speed of service of spray gun array.
CN201310076785.6A 2013-03-12 2013-03-12 Steel plate preprocess method Active CN103240680B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109333374A (en) * 2018-12-03 2019-02-15 山西太钢不锈钢股份有限公司 Surface of steel plate oxide removal method
CN111843851A (en) * 2020-07-21 2020-10-30 广州大学 Hybrid reinforced grinding method for bearing processing

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1432658A (en) * 1973-06-27 1976-04-22 Ishikawajima Harima Heavy Ind Abrasive particle blasting apparatus
JPS61296916A (en) * 1985-06-25 1986-12-27 Ishikawajima Harima Heavy Ind Co Ltd Descaling method for stainless steel plate
CN1880018A (en) * 2005-09-26 2006-12-20 福群电子(深圳)有限公司 Method and device for removing burr and oil stain of metal piece, plastic product using jet fluid
CN102000644A (en) * 2010-11-26 2011-04-06 青岛舞鹤船舶机械有限公司 Steel plate pretreatment production line
CN201871449U (en) * 2010-11-02 2011-06-22 山东开泰抛丸机械有限公司 Production line for preprocessing steel plate
CN202079503U (en) * 2011-03-18 2011-12-21 大丰市龙城铸造机械有限公司 Steel plate pretreatment production line
CN202318016U (en) * 2011-11-24 2012-07-11 西南科技大学 Double-side feed type high-pressure abrasive water jet polishing device
CN202607503U (en) * 2012-06-01 2012-12-19 成都力锋清洗机股份有限公司 High-pressure environment-friendly rust and paint removing machine
CN202684762U (en) * 2012-06-12 2013-01-23 重庆渝弘嘉城汽车配件制造有限公司 Workpiece surface treatment equipment

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1432658A (en) * 1973-06-27 1976-04-22 Ishikawajima Harima Heavy Ind Abrasive particle blasting apparatus
JPS61296916A (en) * 1985-06-25 1986-12-27 Ishikawajima Harima Heavy Ind Co Ltd Descaling method for stainless steel plate
CN1880018A (en) * 2005-09-26 2006-12-20 福群电子(深圳)有限公司 Method and device for removing burr and oil stain of metal piece, plastic product using jet fluid
CN201871449U (en) * 2010-11-02 2011-06-22 山东开泰抛丸机械有限公司 Production line for preprocessing steel plate
CN102000644A (en) * 2010-11-26 2011-04-06 青岛舞鹤船舶机械有限公司 Steel plate pretreatment production line
CN202079503U (en) * 2011-03-18 2011-12-21 大丰市龙城铸造机械有限公司 Steel plate pretreatment production line
CN202318016U (en) * 2011-11-24 2012-07-11 西南科技大学 Double-side feed type high-pressure abrasive water jet polishing device
CN202607503U (en) * 2012-06-01 2012-12-19 成都力锋清洗机股份有限公司 High-pressure environment-friendly rust and paint removing machine
CN202684762U (en) * 2012-06-12 2013-01-23 重庆渝弘嘉城汽车配件制造有限公司 Workpiece surface treatment equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109333374A (en) * 2018-12-03 2019-02-15 山西太钢不锈钢股份有限公司 Surface of steel plate oxide removal method
CN111843851A (en) * 2020-07-21 2020-10-30 广州大学 Hybrid reinforced grinding method for bearing processing

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