CN105108279B - Alloy-steel plate welding procedure - Google Patents
Alloy-steel plate welding procedure Download PDFInfo
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- CN105108279B CN105108279B CN201510552373.4A CN201510552373A CN105108279B CN 105108279 B CN105108279 B CN 105108279B CN 201510552373 A CN201510552373 A CN 201510552373A CN 105108279 B CN105108279 B CN 105108279B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of alloy-steel plate welding procedure, including：Polishing top double V-groove and bottom double V-groove；Ground floor welding is carried out to top double V-groove, the 1/2 of height is welded to, by two pieces of alloy-steel plate turn-over back chippings, ground floor welding is carried out to bottom double V-groove, be welded to the 1/4 of height；By two pieces of alloy-steel plate turn-overs, welded with flame and ultrasonically treated ground floor, second layer welding is carried out to top double V-groove immediately, be welded to the 3/4 of height；Again by two pieces of alloy-steel plate turn-overs, welded with flame and ultrasonically treated ground floor, second layer welding is carried out to bottom double V-groove immediately, be welded to the 3/4 of height；By two pieces of alloy-steel plate turn-overs, welded with flame and the ultrasonically treated second layer, the weldering of top double V-groove is full；Again by two pieces of alloy-steel plate turn-overs, welded with flame and the ultrasonically treated second layer, the weldering of bottom double V-groove is full.The present invention can improve welding line structure, reduce welding residual stress, strengthen the plasticity and toughness of welding point.
Description
Technical field
The present invention relates to welding technology field.It is more particularly related to a kind of alloy-steel plate welding procedure.
Background technology
Steel alloy has high intensity, high tenacity and good combination property, is widely used in industrial circle.But
It is that the extensive utilization of any structural metallic materials depends not only on the performance characteristics of its own, and also relies on the skill of welding
Art technical merit.But there is welding line structure not in the method that the gas shielded arc welding for using at present is welded to steel alloy
The defect such as good, welding point plasticity and toughness are not enough, welding residual stress is big.Therefore, a kind of new welding side of design is needed badly
Method eliminates these defects.
The content of the invention
The purpose of the present invention is, by the welding procedure of alloy-steel plate, to improve welding line structure, reduces welding residual stress, is carried
Weldquality high, strengthens the plasticity and toughness of welding point.
In order to realize these purposes of the invention and further advantage, there is provided a kind of alloy-steel plate welding procedure, bag
Include following steps：
Step one, two pieces of interfaces of alloy-steel plate to be welded are carried out retaining wall on slope, and dock two pieces of alloy-steel plates
Top double V-groove and bottom double V-groove are formed, top double V-groove and bottom double V-groove are then polished into metal with gauze
Gloss, groove then rinsed 2-3 times and dried with sodium hydroxide solution；Wherein, top double V-groove and bottom double V-groove
One of face vertically, and is in 45° angle with another face；
Step 2, ground floor welding is carried out to the top double V-groove, is welded to the 1/2 of the top double V-groove height,
Then by two pieces of alloy-steel plate turn-over back chippings, ground floor welding is carried out to the bottom double V-groove, is welded to the bottom V-type slope
The 1/4 of open height；
Step 3, by two pieces of alloy-steel plate turn-overs, the ground floor of the top double V-groove is welded into heating 5- with flame
8min, is welded to the ground floor of the top double V-groove with the ultrasonic wave of 20kHz while heating and irradiated, immediately after
Second layer welding is carried out to the top double V-groove, is welded to described to the 3/4 of top double V-groove height；Again by two blocks of alloys
Steel plate turn-over, heating 10-15min is welded with flame by the ground floor of the bottom double V-groove, with 25kHz's while heating
Ground floor weldering of the ultrasonic wave to bottom double V-groove is irradiated, and carries out second layer weldering to the bottom double V-groove immediately after
Connect, be welded to described to the 3/4 of bottom double V-groove height；
Step 4, by two pieces of alloy-steel plate turn-overs, the second layer of the top double V-groove is welded into heating 15- with flame
20min, is welded to the second layer of the top double V-groove with the ultrasonic wave of 30kHz while heating and irradiated, immediately after
Third layer welding is carried out to the top double V-groove, welds full to by the top double V-groove；Two pieces of alloy-steel plates are turned over again
Face, heating 15-20min is welded with flame by the second layer of the bottom double V-groove, with the ultrasonic wave of 30kHz while heating
Second layer weldering to the bottom double V-groove is irradiated, and carries out third layer welding to the bottom double V-groove immediately after,
Weld full to by the bottom double V-groove.
Preferably, described alloy-steel plate welding procedure, the alloy-steel plate is Q460 steel plates, the alloy-steel plate
Thickness is 30mm.
Preferably, described alloy-steel plate welding procedure, in the step 2, to the top double V-groove and institute
Stating bottom double V-groove carries out the welding parameter of ground floor welding：Welding current is 135-145A, and weldingvoltage is 20V, welding speed
Degree 100-120mm/min, CO2Gas flow is 15-18L/min.
Preferably, described alloy-steel plate welding procedure, in the step 3, to the top double V-groove and institute
Stating bottom double V-groove carries out the welding parameter of second layer welding：Welding current is 150-160A, and weldingvoltage is 22V, welding speed
Degree 120-140mm/min, CO2Gas flow is 18-20L/min.
Preferably, described alloy-steel plate welding procedure, in the step 4, to the top double V-groove and institute
Stating bottom double V-groove carries out the welding parameter of third layer welding：Welding current is 170-180A, and weldingvoltage is 24V, welding speed
Degree 180-200mm/min, CO2Gas flow is 20-25L/min.
Preferably, described alloy-steel plate welding procedure, in the step 2, is carried out to the top double V-groove
Before ground floor welding, also include：
The top double V-groove and its two side areas are heated with flame, to apart from the perpendicular of the top double V-groove
When the regional temperature for facing 100mm directly is 100 DEG C, stop heating, then with flame to the bottom double V-groove and its two side areas
Heated, when extremely the regional temperature apart from the vertical plane 100mm of the bottom double V-groove is 100 DEG C, stopped heating.
Preferably, described alloy-steel plate welding procedure, in the step 2, is carried out to the top double V-groove
Before ground floor welding, also include：
The titanium valve that purity is 99.5% is taken, the inclined plane and the bottom double V-groove of the top double V-groove is coated in
In inclined plane on several regions, irradiate these regions to all titanium valves with the laser that power is 3000W and stick on described
In the inclined plane of the inclined plane of portion's double V-groove and the bottom double V-groove, stop irradiation, gone bail for using argon gas in irradiation process
Shield gas.
The present invention at least includes following beneficial effect：
(1) present invention carries out three layers of welding to the inclined plane and bottom double V-groove of top double V-groove, and layer weldering is to upper afterwards
One layer is welded the heat treatment for having carried out once equivalent to normalizing, improves the seam organization and structure of last layer weldering, makes its crystal grain thin
Change, improve the plasticity and toughness of welding point.And, also layer is carried out to heat and ultrasonically treated, it is welded with last layer
Fully it is merged, eliminates stomata, and further make the crystal grain refinement of weldering, it is often more important that, can effectively eliminate welding
Residual stress.
(2) present invention before welding, a certain amount of titanium valve is attached on inclined plane and the bottom of top double V-groove with laser
In the inclined plane of double V-groove, titanium valve can effectively improve the machinery of weld seam and two pieces of connecting portions of alloy-steel plate after welding
Intensity.
Further advantage of the invention, target and feature embody part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is the structural representation of top double V-groove of the invention and bottom double V-groove.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that it is used herein such as " have ", "comprising" and " including " term do not allot one or many
The presence or addition of individual other elements or its combination.
A kind of alloy-steel plate welding procedure, comprises the following steps：
Step one, two pieces of interfaces of alloy-steel plate to be welded are carried out retaining wall on slope, and dock two pieces of alloy-steel plates
Top double V-groove 1 and bottom double V-groove 2 are formed, as shown in figure 1, then with gauze by top double V-groove 1 and bottom V-type slope
Mouth 2 polish metallic luster, and then groove is rinsed 2-3 times and dried with sodium hydroxide solution；Wherein, top double V-groove 1
With one of face of bottom double V-groove 2 vertically, and with another face it is in 45° angle；Here steel alloy can be
5CrMnMo, 40Cr and Q460 etc., welding procedure of the invention are preferred for Q460 alloy-steel plates, are particularly well-suited to thickness and are
The steel plate of 30mm；The present invention is vertically, another using a kind of asymmetric double V-groove, i.e. top double V-groove 1 a face up and down
Individual face inclines, and also vertically, another face also inclines, and the angle in two faces is 45 ° in a face of bottom double V-groove 2.This
Sample, because top double V-groove 1 and bottom double V-groove 2 stagger setting, during welding, does not result in a region on two blocks of steel plates
Heat repeatedly, reduce welding injury of the heat to alloy-steel plate, in the present invention, it is preferred to scheme be：Top double V-groove 1
Vertical plane with bottom double V-groove 2 is in the same plane.Preparation before welding is to beat upper and lower two grooves
Mill, to remove debris, dust and oxide, then removes the organic matters such as grease, it is to avoid these impurity pair with sodium hydroxide solution
Welding quality causes damage.
Step 2, ground floor welding is carried out to the top double V-groove 1, be welded to the 1/ of the height of top double V-groove 1
2, then by two pieces of alloy-steel plate turn-over back chippings, ground floor welding is carried out to the bottom double V-groove 2, it is welded to the bottom V-type
The 1/4 of the height of groove 2；Here, welding uses CO using equipment2Gas shield soldering equipment.To the top double V-groove 1 and institute
Stating bottom double V-groove 2 carries out the welding parameter of ground floor welding：Welding current is 135-145A, and weldingvoltage is 20V, welding
Speed 100-120mm/min, protective gas CO2Gas flow is 15-18L/min.Ground floor weldering to top double V-groove 1
To the 1/2 of height, the ground floor to bottom double V-groove 2 is welded to the 1/4 of its height, and this is due to entering to top double V-groove 1
After the weldering of row ground floor, there is more amount of residual heat, in order to avoid continuing steel plate is heated, so by two pieces on two blocks of steel plates
Steel plate turn-over, and the 1/4 of height is only welded to, to reduce injury of the sweating heat to steel plate as far as possible.
Step 3, by two pieces of alloy-steel plate turn-overs, the ground floor of the top double V-groove 1 is welded into heating 5- with flame
8min, is welded to the ground floor of the top double V-groove 1 with the ultrasonic wave of 20kHz while heating and irradiated, immediately after
Second layer welding is carried out to the top double V-groove 1, the 3/4 of the height of top double V-groove 1 is welded to；Again by two blocks of alloys
Steel plate turn-over, heating 10-15min is welded with flame by the ground floor of the bottom double V-groove 1, with 25kHz's while heating
Ground floor weldering of the ultrasonic wave to bottom double V-groove 2 is irradiated, and carries out second layer weldering to the bottom double V-groove 2 immediately after
Connect, be welded to the 3/4 of the height of bottom double V-groove 2；Here, the top double V-groove 1 and the bottom double V-groove 2 are entered
The preferred weld parameter of row second layer welding：Welding current is 150-160A, and weldingvoltage is 22V, speed of welding 120-
140mm/min, CO2Gas flow is 18-20L/min.In order to reduce the defect, this hair such as the stomata in ground floor weldering, uneven
It is bright accelerate layer by the way of ultrasound while in heating in particle accelerate, fusion, eliminate stomata, uneven etc. lack to reach
Sunken purpose, and the length of time is to adapt to the demand of different layer thickness.In addition, ultrasound is to steel plate and layer machinery
Ripple is vibrated, and can also effectively eliminate welding residual stress.The height of the layer of the second layer of top double V-groove 1 is less than
The height of the layer of the second layer of bottom double V-groove 2, this is in order to the heat for not making steel plate be subject in a short time is excessive and right
Steel plate causes damage.
Step 4, by two pieces of alloy-steel plate turn-overs, the second layer of the top double V-groove 1 is welded into heating 15- with flame
20min, is welded to the second layer of the top double V-groove 1 with the ultrasonic wave of 30kHz while heating and irradiated, Ran Houli
Third layer welding is carried out to the top double V-groove 1, welds full to by the top double V-groove 1；Again by two blocks of steel alloys
Plate turn-over, heating 15-20min is welded with flame by the second layer of the bottom double V-groove 2, the surpassing with 30kHz while heating
Second layer weldering of the sound wave to the bottom double V-groove 2 is irradiated, and carries out third layer to the bottom double V-groove 2 immediately after
Welding, welds full to by the bottom double V-groove 2.Here, is carried out to the top double V-groove 1 and the bottom double V-groove 2
Three layers of preferred weld parameter of welding：Welding current is 170-180A, and weldingvoltage is 24V, speed of welding 180-200mm/
Min, CO2Gas flow is 20-25L/min.Here heating and ultrasound is identical with the heating and ultrasonication in step 3,
It is, in order to eliminate the defect such as stomata, uneven, further make the crystal grain refinement of layer, and effectively to eliminate welding residual stress.
In a word, the top double V-groove 1 and bottom double V-groove 2 that the present invention passes through have carried out three layers of welding, next layer of weldering
The effect that there is similar normalizing to last layer welding is connect, is added and is welded with heating and ultrasonically treated last layer, can effectively make weldering
Crystal grain refinement in layer, and repeated ultrasonic can eliminate welding residual stress, and these factor collective effects improve welding and connect
The plasticity and toughness of head.
In another example, described alloy-steel plate welding procedure, in the step 2, to the top V-type slope
Before mouth 1 carries out ground floor welding, also include：
The top double V-groove 1 and its two side areas are heated with flame, to apart from the top double V-groove 1
When the regional temperature of vertical plane 100mm is 100 DEG C, stop heating, then with flame to the bottom double V-groove 2 and its both sides
Region is heated, and when extremely the regional temperature apart from the vertical plane 100mm of the bottom double V-groove 2 is 100 DEG C, stops heating.
Here there is provided the mode for further reducing welding residual stress, i.e., to being close to top double V-groove 1 and bottom V-type slope on steel plate
The region of mouth 2 is preheated, and steel plate is softened, and enables layer free wxpansion and contraction, so as to reduce welding residual stress.
In another example, described alloy-steel plate welding procedure, in the step 2, to the top V-type slope
Before mouth 1 carries out ground floor welding, also include：
The titanium valve that purity is 99.5% is taken, the inclined plane and the bottom double V-groove 2 of the top double V-groove 1 is coated in
Inclined plane on several regions, with the laser that power is 3000W irradiate these regions to all titanium valves stick to it is described
In the inclined plane of the inclined plane of top double V-groove 1 and the bottom double V-groove 2, stop irradiation, argon gas is used in irradiation process
Make protective gas.This provide a kind of mode for improving weld joint mechanical intensity, i.e., will be with LASER HEATING top double V-groove 1
Bottom double V-groove 2, a certain amount of titanium valve is attached on the inclined plane of top double V-groove 1 and the inclined plane of bottom double V-groove 2
On, titanium valve can increase the weld strength between layer and steel plate, and then improve the mechanical strength of connecting portion.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in specification and implementation method
With.It can be applied to various suitable the field of the invention completely.For those skilled in the art, can be easily
Realize other modification.Therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (7)
1. a kind of alloy-steel plate welding procedure, it is characterised in that comprise the following steps：
Step one, two pieces of interfaces of alloy-steel plate to be welded are carried out retaining wall on slope, and make two pieces of alloy-steel plates dock to be formed
Top double V-groove and bottom double V-groove, then polish metal light with gauze by top double V-groove and bottom double V-groove
Pool, groove then rinsed 2-3 times and dried with sodium hydroxide solution；Wherein, top double V-groove and bottom double V-groove its
In a face vertically, and with another face be in 45° angle；
Step 2, ground floor welding is carried out to the top double V-groove, be welded to the 1/2 of the top double V-groove height, then
By two pieces of alloy-steel plate turn-over back chippings, ground floor welding is carried out to the bottom double V-groove, be welded to the bottom double V-groove high
The 1/4 of degree；
Step 3, by two pieces of alloy-steel plate turn-overs, the ground floor of the top double V-groove is welded into heating 5-8min with flame,
The ground floor of the top double V-groove is welded with the ultrasonic wave of 20kHz while heating and is irradiated, immediately after on described
Portion's double V-groove carries out second layer welding, is welded to the 3/4 of the top double V-groove height；Again by two pieces of alloy-steel plate turn-overs,
The ground floor of the bottom double V-groove is welded into heating 10-15min with flame, while heating with the ultrasonic wave of 25kHz under
The ground floor weldering of portion's double V-groove is irradiated, and carries out second layer welding to the bottom double V-groove immediately after, is welded to described
The 3/4 of bottom double V-groove height；
Step 4, by two pieces of alloy-steel plate turn-overs, the second layer of the top double V-groove is welded into heating 15-20min with flame,
The second layer of the top double V-groove is welded with the ultrasonic wave of 30kHz while heating and is irradiated, immediately after to described
Top double V-groove carries out third layer welding, welds full to by the top double V-groove；Again by two pieces of alloy-steel plate turn-overs, with fire
Flame by the second layer of bottom double V-groove weldering heating 15-20min, with the ultrasonic wave of 30kHz under described while heating
The second layer weldering of portion's double V-groove is irradiated, and carries out third layer welding to the bottom double V-groove immediately after, to by described in
Bottom double V-groove weldering is full.
2. alloy-steel plate welding procedure as claimed in claim 1, it is characterised in that the alloy-steel plate is Q460 steel plates, institute
The thickness for stating alloy-steel plate is 30mm.
3. alloy-steel plate welding procedure as claimed in claim 2, it is characterised in that in the step 2, to the top V
Type groove and the bottom double V-groove carry out the welding parameter of ground floor welding：Welding current is 135-145A, and weldingvoltage is
20V, speed of welding 100-120mm/min, CO2Gas flow is 15-18L/min.
4. alloy-steel plate welding procedure as claimed in claim 3, it is characterised in that in the step 3, to the top V
Type groove and the bottom double V-groove carry out the welding parameter of second layer welding：Welding current is 150-160A, and weldingvoltage is
22V, speed of welding 120-140mm/min, CO2Gas flow is 18-20L/min.
5. alloy-steel plate welding procedure as claimed in claim 4, it is characterised in that in the step 4, to the top V
Type groove and the bottom double V-groove carry out the welding parameter of third layer welding：Welding current is 170-180A, and weldingvoltage is
24V, speed of welding 180-200mm/min, CO2Gas flow is 20-25L/min.
6. alloy-steel plate welding procedure as claimed in claim 5, it is characterised in that in the step 2, to the top V
Before type groove carries out ground floor welding, also include：
The top double V-groove and its two side areas are heated with flame, to the vertical plane apart from the top double V-groove
When the regional temperature of 100mm is 100 DEG C, stop heating, the bottom double V-groove and its two side areas are carried out with flame then
Heating, when extremely the regional temperature apart from the vertical plane 100mm of the bottom double V-groove is 100 DEG C, stops heating.
7. alloy-steel plate welding procedure as claimed in claim 6, it is characterised in that in the step 2, to the top V
Before type groove carries out ground floor welding, also include：
The titanium valve that purity is 99.5% is taken, the inclination of the inclined plane and the bottom double V-groove of the top double V-groove is coated in
On face on several regions, irradiate these regions to all titanium valves with the laser that power is 3000W and stick to the top V-type
In the inclined plane of the inclined plane of groove and the bottom double V-groove, stop irradiation, protection gas is made using argon gas in irradiation process
Body.
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| JPS56136281A (en) * | 1980-03-26 | 1981-10-24 | Mitsubishi Heavy Ind Ltd | Horizontal automatic welding method of aluminum and aluminum alloy |
| CN101607342A (en) * | 2009-06-26 | 2009-12-23 | 广州中船黄埔造船有限公司 | A kind of submerged arc welding method of plank boards and jointing boards |
| CN103785931B (en) * | 2014-02-28 | 2016-09-28 | 南车长江车辆有限公司 | A kind of stainless steel welded method |
| CN104002023B (en) * | 2014-05-29 | 2016-08-24 | 南通中远重工有限公司 | A kind of welding procedure for heterogeneous material slab |
| CN104209625A (en) * | 2014-09-16 | 2014-12-17 | 武汉一冶钢结构有限责任公司 | Q460 steel thick plate welding process |
| CN104475920A (en) * | 2014-11-13 | 2015-04-01 | 南京钢铁股份有限公司 | Electro-gas welding method suitable for steel plate 50-80mm in thickness |
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