CN209698231U - Wear gas welding reparation site welding device in a kind of yire mill horizontal roll shaft middle section - Google Patents
Wear gas welding reparation site welding device in a kind of yire mill horizontal roll shaft middle section Download PDFInfo
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- CN209698231U CN209698231U CN201920469086.0U CN201920469086U CN209698231U CN 209698231 U CN209698231 U CN 209698231U CN 201920469086 U CN201920469086 U CN 201920469086U CN 209698231 U CN209698231 U CN 209698231U
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- roll shaft
- middle section
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- steel structure
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- 238000003466 welding Methods 0.000 title claims abstract description 99
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 230000008439 repair process Effects 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 abstract description 17
- 238000005299 abrasion Methods 0.000 abstract description 12
- 238000009418 renovation Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 2
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Abstract
The utility model discloses a kind of abrasion gas weldings of yire mill horizontal roll shaft middle section to repair site welding device, is related to macrotype axes series parts recovery technique field.Wear gas welding reparation site welding device in the yire mill horizontal roll shaft middle section, including fixed bottom plate, two sides at the top of the fixed bottom plate are fixedly connected to steel structure support, axis is provided on the steel structure support, rotary part is provided between the axis and steel structure support, there is welding position on the axis, and welding position is located between two steel structure supports, the steel structure support is provided with lifting lug far from the side of axis.Wear gas welding reparation site welding device in the yire mill horizontal roll shaft middle section; by formulating yire mill horizontal roll shaft middle section abrasion gas welding renovation technique and its equipment and being implemented; to shorten the repair time; reduce maintenance cost; labor intensity and failure rate shutdown loss are reduced, is produced for rationally group and provides guarantee.
Description
Technical field
The utility model relates to macrotype axes series parts recovery technique fields, specially a kind of yire mill horizontal roll shaft middle section
It wears gas welding and repairs site welding device.
Background technique
The rim of steel plant's various specifications is cut into the length of needs by the qualified raw material steel ingot of inspection by disk cold saw,
By annular-heating cutting after Heating Steel Ingots arrive technological temperature, by movable type mechanical hand be clamped to hydraulic press it is upset and perforate,
Steel ingot is sent to roughing mill, finishing mill grinding forming after holding perforation by fixed suspension clamp again.And becking mill is responsible for the half of rim
Finished product rolls, and main transmission is to be driven respectively by main motor by main gear reducer, main shaft, bevel gear, big small Spur gear
Home roll vertical shaft and horizontal roller rotation realize that wherein small Spur gear is on main shaft, and the large straight gear engaged is mounted in water
On plain-barreled roll axis, intermeshing a pair of small Spur gear greatly matches revolving speed from being mainly when becking mill works and transmits torque
Effect, horizontal roll shaft intermediate thick, that both ends are thin is formed with integrally high-quality 35# steel forgings deformation, and axis middle section abration position is straight
Diameter is Ф 325mm, the whole 25T that is self-possessed, and overall length is about 6000mm, and the connection of two head rest mechanical equipments, middle section axis and bearing shell oil film are protected
Shield contact, radial height can be with adjust automatically.Bearing shell uses elliptic bush in bush seat, and inner circle is cast with karmarsch alloy.In
Low brass is connected with lube plant.But with the lengthening of yire mill working time, horizontal roll shaft middle section is due to oil film
It is destroyed, leads to grinding loss between horizontal roller middle section and bearing shell, confirmed through measurement, it is deep about that axis fray forms width about 4cm
The circumferential grooves that 0.5mm--1.5mm is not waited, generation when affecting operating and the rolling accuracy of shafting, and yire mill being made to work
Biggish vibration and noise.Since becking mill horizontal roller is bulky, disassembly, lifting and transport all exist certain tired
Difficulty transports to producer's reparation, long period, and scene is replaced, and spare part, to resume production as early as possible, needs also in adoption process
Scene, which is formulated, wears gas welding renovation technique and its equipment to yire mill horizontal roll shaft middle section.
In the prior art, various horizontal roll shaft abrasion REPAIR WELDING applications are more universal, but large-scale for live milling train
Horizontal roll shaft middle section abrasion manual gas welding renovation technique is also more rare, and it is existing that yire mill large size horizontal roll shaft wears manual gas welding
It repairs Major Difficulties and is to make and roll carrying roller, processing before the manual welding of axis fray scene, mating according to object scene
Production heating device and the welding space that must match, the axis after REPAIR WELDING is reached by hand lapping meets operating size, table
Face and internal layer cannot all have any welding defect to avoid subsequent affect quality operation cycle.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of abrasion gas welding of yire mill horizontal roll shaft middle section and repairs
Reappear field welder, solve in the prior art, horizontal roll shaft wears REPAIR WELDING application, and milling train is large-scale horizontal on site
When gas welding reparation is worn in roll shaft middle section, maintenance time is longer, and maintenance cost is higher, the larger problem of labor intensity.
(2) technical solution
In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of yire mill horizontal roller
Wear gas welding reparation site welding device, including fixed bottom plate in axis middle section, and the two sides at the top of the fixed bottom plate are fixedly connected with
There is steel structure support, axis is provided on the steel structure support, rotary part, institute are provided between the axis and steel structure support
Stating has welding position on axis, and welding position is located between two steel structure supports, side of the steel structure support far from axis
It is provided with lifting lug.
(3) beneficial effect
The utility model provides a kind of abrasion gas welding of yire mill horizontal roll shaft middle section and repairs site welding device.Have
Below the utility model has the advantages that site welding device is repaired in yire mill horizontal roll shaft middle section abrasion gas welding, by formulating yire mill
Horizontal roll shaft middle section abrasion gas welding renovation technique and its equipment are simultaneously implemented, and to shorten the repair time, are reduced maintenance cost, are subtracted
Few labor intensity and failure rate shutdown loss produce for rationally group and provide guarantee.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of site welding device；
Fig. 2 is horizontal roller journal wear three-dimensional figure；
Fig. 3 is welding direction schematic diagram；
Fig. 4 is welding gun and welding wire angle schematic diagram in welding process.
In figure: 1, fixed bottom plate；2, steel structure support；3, rotary part；4, axis；5, lifting lug；6, welding position.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-4 is please referred to, the utility model provides a kind of technical solution: wearing gas in a kind of yire mill horizontal roll shaft middle section
Repair welding reappears field welder, including fixed bottom plate 1, and the two sides at fixed 1 top of bottom plate are fixedly connected to steel structure support 2,
It is provided with axis 4 on steel structure support 2, rotary part 3 is provided between axis 4 and steel structure support 2, there is welding position 6 on axis 4,
And welding position 6 is located between two steel structure supports 2, steel structure support 2 is provided with lifting lug 5 far from the side of axis 4.
Wear gas welding renovation technique in a kind of yire mill horizontal roll shaft middle section, including the abrasion of yire mill horizontal roll shaft middle section
Site welding device is repaired in gas welding, using following steps:
S1, production site welding device, specific manufacturing process are as follows:
50mm thickness steel plate is cut using oxyacetylene torch, to make fixed bottom plate 1 and steel structure support 2, rotation section
Position 3 makes steel part lifting lug 5 using 30mm thickness steel plate cutting semi arch and circular hole of polishing, and when connection is preferentially fixed
Bottom plate 1 cuts semi arch using 30mm steel plate and is welded into rotary part 3, reinforces welding using 30mm steel plate cutting rectangular block
Steel structure support 2 is finally symmetrically welded steel part lifting lug 5, ontology must have to fixed bottom steel plate 1 and rotary part 3
Enough welding temperatures can just be such that base material and wlding fuses, and configure ZWK-180KW temperature controller, heater, thermocouple, two sides away from
Off-axis fray 40mm heating (specific heating means are as follows: and secondary cable laying-thermocouple fixes-and heater fixes-heat-preservation cotton
Fixation-heater connection-secondary cable connection-secondary cable the inspection of line-thermometric connection-thermometric inspection of line-
Trial line charging -- heating process is controlled and is recorded for heating, and welding place prepares carry on construction work at night illumination and fire distinguisher at the scene).
S2, welding preparation: equipment needed for welding preparation, specific equipment and its parameter are as follows:
Gas welding device: H01-20 welding gun, 3# tip, hose clamp, oxy-acetylene bottle, oxy-acetylene wind band
Heating device: ZWK-180KW temperature controller, heater, thermocouple.
Auxiliary equipment: angle grinder, hand hammer, flat chisel, tinted glasses, copper needle, kid gloves, template, temperature measurer, is put file
Big mirror, heat-preservation cotton.
Weldment bulk material: 35# steel-casting.
Groove type: double V-groove.
Welding position: 45 ° of upward downhand position rotation welding of beginning are kept.
Welding requirements: all welding layers must be without any welding defect.Especially bottom first layer Welding Metallurgy is fused to mother
Material.
Welding material: bottoming, filling, capping are all made of brass welding wire GMT-CU, and good mechanical property, wearability is good, flowing
Property is very outstanding.
Welding wire main ingredient (%) Sn Cu Rem, specification ￠ 2.5mm.
Gas: oxygen, acetylene.
Cleaning before weldering: horizontal roll shaft abrasion welding position goes removing rust, grease, moisture using oxyacetylene torch, emery cloth or
The polishing of abrasive grinding wheel machine.
Weldment position is fixed: rotatable horizontal roll shaft defect welding position must be in a horizontal position always (by hand may be used
It is dynamic with disk).
S3, heating welding: horizontal roll shaft middle section fray is ground by hand using angle grinder by double V-groove first, is removed
Greasy dirt, impurity, moisture etc. allow 40mm symmetrically to wrap up after measurement meets welding technique requirement in the every side in the two sides of double V-groove
Heater carries out local heating by configuring ZWK-180KW temperature controller, heater and thermocouple, and setting is heated to 500 DEG C, adds
Temperature is made every effort to when hot and rises uniform 50 °/h, and the per half an hour measurement of temperature measurer is primary, and V-type is worked as in the substantially all covering of the area of heating
Groove near-bottom temperature, which reaches 450 DEG C, can be carried out welding, and when axis annular solder lights from 3 is soldered at 12 points, then using by hand
Trunnion axis from 9 points of rotations, 90 ° to 12 positions, welding gun is lighted from 3 again is soldered at 12 points and so on until welding completion, welding
The variation of angle of welding gun is 60~70 ° in the process, and the angle of welding wire and welding gun is 90~100 °, and (specific heating means are as follows: two
Secondary cable laying-thermocouple fixes-and heater fixes-heat-preservation cotton fixes-and heater connection-secondary cable connection-is secondary
The thermometric inspection of line-heating trial line charging -- heating process is controlled and is recorded for cable run inspection-thermometric connection-, and existing
Welding place prepares to carry on construction work at night illumination and fire distinguisher, and when welding, both sides swing preheating and wait to be melted, V-type slope
After mouth bottom fusing, welding wire is added into weld seam molten bath rapidly, welding wire should start big according to groove width at molten bath center, welding gun
It is small to be swung, it is ensured that the thickness root of consistent (but the fusion that the must assure that through welding and groove both sides) layer uniform in size in molten bath
It is determined according to flame and silk feeding quantity, weld from bottom to top, welding wire is sent in molten bath, and the status of swing is zigzag, wire feeding mode
It can choose and be directly placed into molten bath, it is ensured that wire feed and torch swinging are consistent).
S4, equating cleaning: face of weld is carried out using angle grinder, file, hand hammer, flat chisel by equating cleaning, reuses 10
Magnifying glass again is detected whether there are various welding defects, true again using the back chipping repair welding of angle grinder part if there is welding defect
Recognize, continue to weld filled layer after no any defect, remains 500 DEG C of interlayer temperature, filling welding layer can be according to double V-groove
Width use bottom multi-pass welding, flame using crescent swing, surface crystallization weld metal formation fish scale-shaped, it is no matter several layers of
Must all confirm weld seam without welding other one layer again after the welding defects such as any crackle, stomata, incomplete fusion, lack of penetration, capping layer
Centainly it is higher than horizontal roller axle journal original surface, using magnifying glass, surface coloration detection weld seam without any crackle, stomata, incomplete fusion, not
Through welding etc. is after welding defects, whole weld seam, heat affected area and the position of heating using ZWK-180KW temperature controller add heat-preservation cotton by
Gradually being cooled to room temperature is also uniform 50 °/h.
S5, precision ground: carrying out precision ground processing using manual angle grinder, and using the template met first made into
Row compares, and restores to use tolerance dimension, horizontal roll shaft middle section surface defect is processed into V-butt using manual angle grinder, passes through
Template inspection and acceptance complies fully with the requirement of horizontal roller unitary rotation, is delivered for use, reaches mechanical performance effect by operating.
Welding condition is as follows:
In conclusion site welding device is repaired in yire mill horizontal roll shaft middle section abrasion gas welding, by formulating rim
Milling train horizontal roll shaft middle section abrasion gas welding renovation technique and its equipment simultaneously be implemented, to shorten the repair time, reduce maintenance at
This, reduces labor intensity and failure rate shutdown loss, produces for rationally group and provides guarantee.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (1)
1. gas welding is worn in a kind of yire mill horizontal roll shaft middle section repairs site welding device, it is characterised in that: including fixed bottom
Plate (1), the two sides at the top of the fixed bottom plate (1) are fixedly connected to steel structure support (2), on the steel structure support (2)
It is provided with axis (4), is provided with rotary part (3) between the axis (4) and steel structure support (2), have welding position on the axis (4)
It sets (6), and welding position (6) are located between two steel structure supports (2), side of the steel structure support (2) far from axis (4)
It is provided with lifting lug (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920469086.0U CN209698231U (en) | 2019-04-09 | 2019-04-09 | Wear gas welding reparation site welding device in a kind of yire mill horizontal roll shaft middle section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920469086.0U CN209698231U (en) | 2019-04-09 | 2019-04-09 | Wear gas welding reparation site welding device in a kind of yire mill horizontal roll shaft middle section |
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| Publication Number | Publication Date |
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| CN209698231U true CN209698231U (en) | 2019-11-29 |
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| CN201920469086.0U Expired - Fee Related CN209698231U (en) | 2019-04-09 | 2019-04-09 | Wear gas welding reparation site welding device in a kind of yire mill horizontal roll shaft middle section |
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| Country | Link |
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| CN (1) | CN209698231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894716A (en) * | 2019-04-09 | 2019-06-18 | 安徽马钢设备检修有限公司 | Wear gas welding renovation technique and its equipment in a kind of yire mill horizontal roll shaft middle section |
-
2019
- 2019-04-09 CN CN201920469086.0U patent/CN209698231U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894716A (en) * | 2019-04-09 | 2019-06-18 | 安徽马钢设备检修有限公司 | Wear gas welding renovation technique and its equipment in a kind of yire mill horizontal roll shaft middle section |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |