CN1095426A - Spray welding technology for drawing block - Google Patents
Spray welding technology for drawing block Download PDFInfo
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- CN1095426A CN1095426A CN93106105A CN93106105A CN1095426A CN 1095426 A CN1095426 A CN 1095426A CN 93106105 A CN93106105 A CN 93106105A CN 93106105 A CN93106105 A CN 93106105A CN 1095426 A CN1095426 A CN 1095426A
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- reel
- remelting
- working face
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Abstract
The invention discloses a kind of spray welding technology for drawing block, when dusting, the reel working face is sprayed into the thin smooth surface in thick both sides, middle part by the wearing and tearing requirement; During remelting, reel is motionless, and makes spool axis become 35～45 degree angles with horizontal plane, and the middle part of working face is near level attitude directly over the reel, fluxes to inside the reel with large size remelting rifle, and the remelting rifle is to working face remelting directly over the reel; During slow cooling, with the reel heating, insert the anti-deformation tool that is complementary in the circle within it, air cooling to room temperature is given removal again.Reel surfacing thickness can increase to 3.5～5.5mm, and the life-span is improved 3～5 times; The reel deflection reduces, and diameter is that the reel out of roundness of 500～700mm can be reduced to 0.1～0.2mm.
Description
The present invention relates to a kind of spray welding technology for drawing block, it comprises following operation: pre-treatment, two step method surfacing, slow cooling etc.
Reel is to be used to draw the parts of dialling steel on the drawing wire machine, drawing wire machine needs many on reel or more than ten, they dial steel with drawing of carbon content 0.60～0.72% under power traction, by dialling the high-tensile steel wires that become below the diameter 1.0mm through repeatedly drawing more than the diameter 4.0mm.In drawing the process of dialling, reel will directly bear compression stiffness several times can reach steel wire about HRC40 radially, axially reaches circumferential direction on its working face pressure and friction, so the reel working face very easily weares and teares.Reel damages will shut down replacing, certainly will have influence on the production efficiency of drawing wire machine.
The spray welding process of the raising reel working face hardness that present China is public is: earlier reel is fixed on the swivel arrangement, with the remelting rifle to the whole preheating of reel, with dust gun the rotating drum working face is dusted again, use then 3～4 the remelting rifle to the remelting simultaneously comprehensively of reel bisque.Bisque is easy to generate the cracking overflow during this method remelting, and layer thickness should not surpass 0.8mm, in the work-ing life of this layer thickness, is about 1 year by eight-hour shifts; In addition, remelting cooling back reel deflection is big, and the reel out of roundness of diameter 500～700mm is 1.0～1.5mm.
Disclose in " heat spraying welding technology " (Fang Shijing of Hunan Province's steel research institute chief editor) book: workpiece surface pre-treatment to be painted, two step method spray welding process stream: workpiece preheating-sprinkling powder-remelting-slow cooling etc.This book is pointed out when comparing the relative merits of " single stage method " and " two step method ": " two step method " is applicable to and requires surperficial layer to approach ... workpiece (the 122nd page).This book is also pointed out: surfacing will make bisque fusing, must the remelting sintering, and workpiece Biao Wenkeda is more than 900 ℃, to some workpiece may deform (the 116th page).
The purpose of this invention is to provide a kind of layer thickness that can strengthen and reduce the spray welding technology for drawing block that matrix is out of shape.
For achieving the above object, the present invention has adopted following method: pre-treatment: with clean-out system, sandblast etc., remove the greasy dirt of workpiece surface and hole etc.Preheating: earlier reel being fixed on a rotating shaft can form on the swivel arrangement of any angle with horizontal plane.The angle that makes spool axis and horizontal plane is 35～45 degree, and the middle part of working face directly over the reel is near the position of level, and this position is of value to the thicker working face middle part of bisque and implements remelting; Then with 2～3 large size remelting rifle to linear velocity 20～30m/min reel heating rotatably, make the reel bulk temperature reach 200～450 ℃.Dust: regulate earlier the powder feed rate of SPH-E2000 type dust gun, make it thicken and be no more than 0.1mm, keep spray gun and apart 120～250mm vertical in the process of dusting with mandrel surface to the above-mentioned rotating drum bisque that whenever dusts; Through dusting repeatedly to the different number of times of reel working face different sites, make the bisque at working face middle part thicken 1.0～1.5mm, make the bisque of working face both sides be thinned to 0.1～0.3mm gradually to two edges of working face respectively, thereby make the bisque of reel working face form the curved surface that thick both sides, middle part are seamlessly transitted by thick attenuation by the wearing and tearing requirement by the middle part powder is thick; The powder consumption measures in advance by surfacing area and thickness, till having sprayed.Remelting: with 2～3 large size remelting rifle is heated above-mentioned rotating drum earlier, make its bulk temperature reach 600～800 ℃, stop the reel rotation, cease the large size remelting rifle that goes out; With 1 the remelting rifle is heated the working face directly over the reel then, the distance of muzzle and working face is 80～100mm, simultaneously with 1 large size remelting rifle reel the inside to directly over the back side of working face flux, the temperature of working face is raised to 850～1050 ℃ directly over making; Be reduced into part with remelting rifle heating-surface area this moment, and muzzle approached 30～50mm to bisque, make this part bisque be raised to 1050～1250 ℃ of temperature of fusion rapidly, produce the molten bath, handle immediately remelting rifle flame when melt tank edge from the time return, the guiding molten bath does not have cracking overflow ground and forms continuously on the working face directly over the reel, the working face remelting is finished directly over this; After this with angle of reel rotation, make reel treat the remelting working face be in directly over the position, still continue remelting as stated above, finish until the whole working face remeltings of reel.To the reel of the thickening layer of still needing, the layer surface film oxide is beaten in first sandblast, repeats 3～5 times by above-mentioned operation again, and layer thickness can increase to 3.5～5.5mm, and surfacing is smooth.Slow cooling: with large size remelting rifle rotating drum integral body is heated to 500～700 ℃ earlier, reel is taken off from swivel arrangement, again inserting in the interior circle of reel one end with the anti-deformation tool of reel coupling, make reel and anti-deformation tool together air cooling to room temperature, shed anti-deformation tool with pressing machine and demoulding frock and pole then, the reel deflection can be reduced in the allowed band.
The powder consumption calculation formula that the present invention takes is:
G＝H.F.g（75～80%）
Wherein: G: powder weight H: surfacing thickness
F: surfacing area g: powder proportion
75～80%: the powder rate.
The powder that the present invention adopts is self-fusible alloy powder of nickel-base G112+WC or G116+WC.
Owing to adopted in the technique scheme: the working face bisque is sprayed into the thin smooth surface in thick both sides, middle part by the wearing and tearing requirement, reel is motionless during remelting, the middle part of working face is in the position near level directly over the reel, large size remelting rifle is fluxed to the corresponding site of reel the inside, the remelting rifle is to the local remelting of working face directly over the reel and form the molten bath continuously, in reel, insert supporting anti-deformation tool air cooling in the circle and give methods such as removal to room temperature again, reel surfacing thickness can increase to 3.5～5.5mm, its work-ing life, be made as 3～5 years by three-shift operation, the reel deflection reduces, and experimental results show that: diameter is that the reel out of roundness of φ 500～700mm can be reduced to 0.1～0.2mm.
Below in conjunction with drawings and Examples the present invention is described in further detail.
Fig. 1 is a kind of sectional view of drawing block.
Fig. 2 is the location synoptic diagram that reel is fixed in swivel arrangement coiling axis and horizontal plane angle.
Fig. 3 is that reel working position partial cutaway is shown enlarged diagram.
Fig. 4 is the locations of structures diagrammatic cross-section of reel and anti-deformation tool, demoulding frock and rod iron.
What represent in Fig. 1 is the used drawing block of present embodiment, and the diameter phi 1 of reel 1 is 500mm, and the interior circular diameter φ 2 of reel 1 is 460mm, and the material of reel 1 is the HT400 grey cast iron, and the layer thickness requirement is: the middle part A of reel working face A
2Thickness be 3.5～4.0mm, the both sides A of working face A
1, A
3Thickness be thinned to 0.2～0.3mm gradually by 3.5～4.0mm.
Processing sequence of the present invention is: mechanical workout: car reel working position is than the little 3.5mm of size.Sandblast: remove interior greasy dirt of reel working face and hole and oxide compound etc.Blow ash: with pressure is that the clean pressurized air of 0.6MPa is blown away and left over dust etc. after the sandblast.Clean: the greasy dirt of usefulness acetone cleaning web working face and dust etc.Preheating: earlier reel 1 is fixed on the swivel arrangement 2, the angle α that makes spool axis and horizontal plane 45 spends, thereby makes the middle part A of working face A directly over the reel
2Be in position near level, then with two large size remelting rifles to linear velocity 20～30m/min reel heating rotatably, make the reel bulk temperature reach 250～350 ℃, be as the criterion with the variable color of not turning blue of reel working face.Xerotripsis: wipe grey black on the reel working face etc. with clean white continuous yarn.Blow ash: be that the clean pressurized air of 0.6MPa is blown away dust on the reel working face etc. with pressure again.Dust: dust with SPH-E2000 type dust gun, the used oxygen pressure of this spray gun is 0.6～0.65MPa, and acetylene pressure is 0.08～0.12MPa, and nitrogen pressure is 0.18～0.20MPa; Open powder feeding nitrogen and cut down and powder bucket switch, regulate the powder feed rate of spray gun, make it thicken and be no more than 0.1mm, keep spray gun and apart 180～220mm vertical in the process of dusting with mandrel surface to the above-mentioned rotating drum bisque that whenever dusts; Process is dusted repeatedly to the different number of times of reel working face different sites, makes working face middle part A
2Bisque p thicken 1.0～1.5mm, make working face both sides A
1, A
3Bisque p by middle part A
2Powder thick respectively to two edge S of working face
1, S
2Be thinned to 0.1～0.2mm gradually; The powder that uses is self-fusible alloy powder of nickel-base G112+WC, and the powder consumption is pressed surfacing area and THICKNESS CALCULATION, and formula is:
G＝H.F.g（75～80%）
G is a powder weight, and H is a surfacing thickness, and F is the surfacing area, and g is a powder proportion, 75～80% be the powder rate.Calculate to such an extent that the every layer of consumption that dusts is 1.2Kg by following formula, till having sprayed, remelting: with two large size remelting rifles above-mentioned rotating drum is heated earlier, make its bulk temperature reach 600～800 ℃, stop reel and rotate, cease the large size remelting rifle that goes out; With 1 the remelting rifle is heated working face A directly over the reel then, the distance of muzzle and working face is 80～100mm, simultaneously with 1 large size remelting rifle reel the inside to directly over the back side of working face A flux, the temperature of working face A is raised to 850～1050 ℃ directly over making; Be reduced into part with remelting rifle heating-surface area this moment, and muzzle approached 30～50mm to bisque, make this part bisque be raised to 1050～1250 ℃ of temperature of fusion rapidly, produce " minute surface is reflective ", when handling remelting rifle flame immediately from the time return, cause continuous molten bath, working face A remelting is finished directly over this; After this with hand-operated tools with angle of reel rotation, make reel treat the remelting working face be in directly over the position, continue remelting more as stated above, finish until the whole working face remeltings of reel.Because layer thickness requirement reel working face middle part A
2Thickness be 3.5～4.0mm, so need again by above-mentioned technical process: sandblast-blow ash-cleaning-preheating-xerotripsis-blow ash-dust-remelting, repeat 3 times, can reach required layer thickness.Slow cooling: after layer thickness reaches requirement, earlier rotating drum integral body is heated to 500～700 ℃ with large size remelting rifle, reel is taken off from swivel arrangement, again the normal temperature state is inserted in the interior circle of reel than the anti-deformation tool 3 of circular diameter φ 2 little 0.06～0.10mm in the reel, make reel 1 and anti-deformation tool 3 together air cooling to room temperature, reel 1 is placed on the demoulding frock 4 together with being shunk the anti-deformation tool 3 that clamps by reel, rod iron 5 is placed on the anti-deformation tool 3 by the reel centre hole, will anti-deformation tool 3 extrude circle in the reels with pressing machine by rod iron 5, the reel out of roundness that sheds behind the anti-deformation tool is 0.1～0.2mm.Polishing: with reel layer polishing light, reel can use with the end face manual polishing machine.
Claims (3)
1, a kind of spray welding technology for drawing block comprises following operation: (1) pre-treatment: with clean-out system, sandblast etc., remove greasy dirt and oxide compound in workpiece surface and the hole; (2) two step method surfacing: 1. preheating: whole workpiece is heated to 200～450 ℃ with the remelting rifle; 2. dust: dust gun is vertical with workpiece surface and at a distance of 120～250mm; 3. remelting: during remelting, remelting muzzle and bisque are at a distance of 30～50mm; (3) slow cooling: indoor air cooling; It is characterized in that: in preheating procedure, earlier reel (1) being fixed on a rotating shaft can form on the swivel arrangement (2) of any angle (α) with horizontal plane, the angle that makes spool axis and horizontal plane is 35～45 degree, and makes the middle part (A of working face (A) directly over the reel
2) be in position near level; With 2～3 large size remelting rifle is heated reel is whole rotatably with linear velocity 20～30m/min then, make it reach 200～450 ℃ of above-mentioned preheating temperatures; In the operation of dusting, regulate earlier the powder feed rate of SPH-E2000 type dust gun, make it thicken and be no more than 0.1mm, the above-mentioned dust gun of control and apart 120～250mm vertical in the process of dusting with mandrel surface to the above-mentioned rotating drum bisque that whenever dusts; Process is dusted repeatedly to the different number of times of reel working face different sites, makes working face middle part (A
2) bisque (P) thicken 1～1.5mm, make working face both sides (A
1, A
3) bisque (P) by middle part (A
2) powder thick respectively to two edge (S of working face
1, S
2) be thinned to 0.2～0.3mm gradually; The powder consumption measures in advance by surfacing area and thickness, till having sprayed; In the remelting operation, with 2～3 large size remelting rifle is heated above-mentioned rotating drum earlier, make its bulk temperature reach 600～800 ℃, stop the reel rotation, cease the large size remelting rifle that goes out; Use one the remelting rifle heated the working face directly over the reel (A) then, the distance of muzzle and working face is 80～100mm, simultaneously with 1 large size remelting rifle reel the inside to directly over the back side of working face flux, the temperature of working face directly over making (A) is raised to 850～1050 ℃; Be reduced into part with remelting rifle heating-surface area this moment, and the distance 30～50mm of muzzle when bisque approaches above-mentioned remelting, make this part bisque be raised to 1050～1250 ℃ of temperature of fusion rapidly, produce the molten bath, handle immediately remelting rifle flame when melt tank edge from the time return, the working face (A) of guiding molten bath directly over reel gone up continuously and formed, and working face directly over this (A) remelting is finished; After this with angle of reel rotation, make reel treat the remelting working face be in directly over the position, still continue remelting as stated above, finish until the whole working face remeltings of reel; To the reel of the thickening layer of still needing, the layer surface film oxide is beaten in first sandblast, repeats 3～5 times by above-mentioned operation again, and layer thickness can increase to 3.5～5.5mm; In the slow cooling program, earlier rotating drum integral body is heated to 500～700 ℃ with large size remelting rifle, reel is taken off from swivel arrangement, again the anti-deformation tool (3) with the reel coupling is placed the interior circle of reel (1) one end, make reel (1) and anti-deformation tool (3) together air cooling shed anti-deformation tool (3) and get final product with pressing machine and demoulding frock (4), garden rod (5) to room temperature.
2, according to the described spray welding process of claim 1, it is characterized in that: the powder consumption is by surfacing area and THICKNESS CALCULATION, and its formula is as follows:
G＝H.F.g（75～80%）
G in the formula: powder weight H: surfacing thickness
F: surfacing area g: powder proportion
75～80%: the powder rate.
3, according to the described spray welding process of claim 1, it is characterized in that: adopt self-fusible alloy powder of nickel-base G112+WC or G116+WC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93106105A CN1033708C (en) | 1993-05-17 | 1993-05-17 | Spray welding technology for drawing block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93106105A CN1033708C (en) | 1993-05-17 | 1993-05-17 | Spray welding technology for drawing block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1095426A true CN1095426A (en) | 1994-11-23 |
| CN1033708C CN1033708C (en) | 1997-01-01 |
Family
ID=4986071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93106105A Expired - Fee Related CN1033708C (en) | 1993-05-17 | 1993-05-17 | Spray welding technology for drawing block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1033708C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126111A (en) * | 2011-02-26 | 2011-07-20 | 张有兵 | Molding process of drawing machine roll blank |
| CN102321886A (en) * | 2011-09-14 | 2012-01-18 | 遵义市润丰源钢铁铸造有限公司 | High-abrasion resistance roller of spray welding and wire drawing machine |
| CN102527753A (en) * | 2012-01-10 | 2012-07-04 | 贵州钢绳(集团)有限责任公司 | Winding drum of wire drawing machine and surface treatment process thereof |
| CN103203519A (en) * | 2013-05-07 | 2013-07-17 | 贵州钢绳股份有限公司 | Surfacing treatment method of winding drum of wire drawing machine |
| CN104947104A (en) * | 2015-07-10 | 2015-09-30 | 吴忠仪表有限责任公司 | Flame remelting device for valve ball core |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751803B (en) * | 2005-09-07 | 2010-09-08 | 闵小兵 | Spray formation method for high-temperature resistance material members |
-
1993
- 1993-05-17 CN CN93106105A patent/CN1033708C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126111A (en) * | 2011-02-26 | 2011-07-20 | 张有兵 | Molding process of drawing machine roll blank |
| CN102321886A (en) * | 2011-09-14 | 2012-01-18 | 遵义市润丰源钢铁铸造有限公司 | High-abrasion resistance roller of spray welding and wire drawing machine |
| CN102527753A (en) * | 2012-01-10 | 2012-07-04 | 贵州钢绳(集团)有限责任公司 | Winding drum of wire drawing machine and surface treatment process thereof |
| CN103203519A (en) * | 2013-05-07 | 2013-07-17 | 贵州钢绳股份有限公司 | Surfacing treatment method of winding drum of wire drawing machine |
| CN104947104A (en) * | 2015-07-10 | 2015-09-30 | 吴忠仪表有限责任公司 | Flame remelting device for valve ball core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1033708C (en) | 1997-01-01 |
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