CB/T 3947-2001 Process requirements for gas-electric automatic vertical welding
Some standard content:
10S 47,020.01
Alternative number: 9842-2002
Shipbuilding industry standard of the People's Republic of China
CB/T3947—2001
Technical requirnents for automatic vertical-up electrogas welding
welding2001—11—15 issued
National Defense Science, Technology and Industry Commission issued
2002—02—01 implemented
CB/T3947—2001
一电自动立费是自效，光选得离方法，上問題已覆座；冲站结构的外板、防能量隔式等装置的同形间的；直接焊技术设计：深度焊；轻照技术太条件，能升力法；双风过程；能升力进行贡献。 This standard mainly includes: step, welding, and auxiliary. 1 Scope
CB/T 3947--2001
Technical requirements for gas-electric automatic vertical welding
This standard specifies the welding equipment of gas-electric special power source, welding materials, auxiliary materials, working environment, groove form, welding operation, quality control, and troubleshooting. This standard is applicable to gas stop not exceeding 32 times, and single reverse gas automatic vertical welding is required. It is also applicable to the connection of small steel plates with a relative position of 13". 2 References to special standards
The provisions included in the following foreign standards are cited in this standard and constitute the standard clauses. When the standard is published, the versions shown are not valid. All standards will be revised. The use of the standard is consistent with the use of the following standard versions GB/E05 2-!993T industry liquid carbon fiber
3715-1995 Tao Jian smoke pad
3 welding equipment
gas electric welding equipment including main furnace connection trolley, full-dense combustion induction machine, air control box, feeding machine, welding inspection and heat and cooling steel meter, etc., equipped with CC welding source, wire feeding mechanism, cooling device and general protective gas facilities, etc. 4 welding materials and auxiliary materials
welding and auxiliary welding, and protective gas, etc. . 4.1 Special CO flux-cored wire is used for coal wire.
4.2 The liner adopts a special dynamic chamber, and the quality plate should meet the requirements of (8/T3715); the cooling copper liner should be air-cooled and purchased: 4.3 The purity of the gas should be 1.5% or more, and the content of unalloyed gas should be less than 0.0%. The quality should meet the requirements of Class 5/6052:
5 Working environment
5.1 The gas-electric active welding should be carried out at a speed of less than 3m/s under the environment described above. If the wind is too strong, the operation should be stopped or effective wind and fire prevention measures should be taken. 5.2 The temperature of the working environment should be lower than 0℃, and the work should be carried out under the appropriate negative heat. 6 Bevel form and distribution
6.1 Bevel Bin
Electric white dynamic vertical welding single-sided bevel, the bevel door and the gap between the plate are determined, see table! : IN
12--:15
15---18
18 --*:23
23~·~26
26·- 29
6.2 Table matching
CB/T 3947-2001
Table 1 Bevel form diameter size
6.2.1 When matching, the silver plate of the blue year should be evenly installed, the standard is 10 lazy 1Gmm, the shape and size are shown in Figure 1, and the positioning plate assembly is
Ratio plate size
6.2.2 The misalignment of the joint is not more than 1. B.2. 3 The degree of fit of the two plates is more than 3 : The cutting material of the plate should be strictly controlled with the recommended plate. The angle of the beam is generally -4 (-t) of the difference between the angle of the plate and the recommended plate. 2
Figure 2 Joint cutting angle diagram
7 Welding
.1 Welding principle
CB/T 3947 - 2001
7.1.1 The plate should be adjusted! The surface and the edge of the slope should be within the range of at least 0 on each side. The cutting and beveling room should be used with a conveyor belt. Clean the cutting or full, full, and full of splashing materials and residual welding chain materials. 71.2. Clean the water, oil, and other cold objects in the groove. 7.2 Inspection before welding
1.2.1 Check whether the electrical wiring and the operation of the press are normal. 7.2.2 Check whether the circulating water flow and the water level of the water tank are normal. When the ambient temperature is below 0℃, the welding process should be normal! 7.2.3 Check whether the C gas level storage base meets the requirements of the entire joint. 7.2.1 When checking the reserve of the welding wire, ensure that the welding wire of the entire welding wire chain is solid and not filtered. Do not use the wire that has been damp or raw. 7.2.5 The welding wire that can withstand the flow can be used after 25 days of insulation training. 72.6 Before the connection, the machine should be inspected for safety. The welder should abide by the relevant safety regulations. 7.3 Preparation for welding 1.3.1 Install the A-type lining on the back of the groove. The ceramic lining should be fixed with at least two linings at the middle of the groove width point. Make the mesh close to the plate. Use too much force to cause the ceramic pad to break. The original ceramic pads should be connected tightly without shadows. 3.2 Place the guide rail on the side. And keep the connection between the three small machines, and tighten the new connection end with a screw to help prevent the rail from accidentally falling off. Before installing the guide rail, the steel plate must be clean and the surface of the half-blade must be straight and stable.
33 Welding garbage and placing the water-cooled slider correctly, the forming position of the copper block should be aligned with the slope: the forming position must be matched with the wave 7 straight front width, see 2. The through-hole and the forming should be kept alive, and the strength should be appropriate. Table 2 Copper block width/groove width changes from 18:-21:22--25:26-29:. 3.4 Adjust the angle and position according to Figure 3, pay attention to the following points and adjust the shape so that it is 5"1%" from the surface of the workpiece when it is vertically welded. In the new welding factory, the angle of the welding structure a
is relatively large, generally the molten pool is as close as possible: b) adjust the welding angle, and control the distance between the front end of the quick guide nozzle and the lower edge of the steel gray shielding gas output port at 20~30
) Adjust the welding wire landing point, so that the welding wire landing point is slightly offset from the center of the plate thickness to the top of the welding nozzle, so as to locate the center of gravity of the cutting surface. CB/T 3947—2001 Conductive purchase
Shielding gas quick basin
Song Hua Gas Parts
Modify the block
Clean water intake
Figure 3 Schematic diagram of welding gun position
. 3.5 If the welding wire needs to be fed in during plate welding, it is necessary to study the setting of the lifting machine's probe working time at both ends. 7.3.6 Check whether the gas pipeline is unobstructed, and adjust the gas flow rate to 25L/min-3oL/min: 7.3. Check whether the cooling belt link is open or not, and the cooling water flow rate should not exceed 2L yuan. 7.4 Welding operation
7.4, turn on water, gas, and switch: mark the starting point of the welding seam 7.4.2, adjust the voltage positioner, welding power generator, and wire extension length controller to the set position, set the motor door and start the motor: open the motor after the welding, and make corrections to the welding current, welding point, etc., and wait until the molten pool liquid level rises to 5-0 away from the gas outlet, and then start the motor travel button: the wire holder needs to be turned on and off, and the swing mechanism is turned off to make the wire reciprocate along the direction.
7.4.3 During welding, the following points should be noted: The wire landing point should be screened by the positive and negative surfaces to determine the heat distribution. The welding should be supervised and corrected in time. The position of the thermoelectric device should be monitored by the mechanical device:
b! Check the center position of the pin:
) The liquid in the control pool should be kept 510mm away from the air outlet: d? Be careful to remove the flying objects on the slider during the shift. 7.4.4 When welding stops, press the stop button to stop the car from moving and feeding the wire, and wait for the molten pool to solidify.
7.4.5 After welding, first turn off the control power switch of the small welding machine, and then turn off the water, gas, and water pump power supply. 7.5.1 The welding process should be tested and the welding process should be detailed. 5.2 The welding process should be tested for the welding current, welding voltage, welding wire length, welding speed, welding wire angle, wire vibration rate and welding noise. The welding process should be tested for the welding wire diameter of 1.6mm according to Appendix 1 (small cracks): 9 Welding quality control and welding fault troubleshooting CB/T 3947-2001 8.1 After welding, the front and back of the welding chain should be inspected. The welding cable should be uniform, dense, smooth and smooth, without any residual effect, and should not have any embedded coal, sub-pits and edges. 8.2 The internal quality of the welding chain can be tested by cable probing, ultrasonic probing and other methods. 8.3 For each type of coal joint failure, the cause and preventive measures are shown in Appendix B (Appendix of Tips). 8.4 For the cause and troubleshooting methods of the faults during welding, see Appendix (Appendix of Tips). CB/T3947-2001
Time Recording A
Interval Indication)
Welding Specifications
The selection of gas and electric current has a great influence on the shaping and quality of welding wire: the welding specification of small welding equipment, medium power, medium pressure, welding speed, welding length, welding wire frequency, etc. The wire length is controlled within 25-35 cm. The domestic standard is second only to the standard. For welding parts, the degree and position of the lamp are announced: for ten years, the gas white dynamic welding can be selected according to the difference specification table A welding specification
fiber joint
tt||335--3509
350--570
260-akn
gross Hong pressure
SE-·36
37--JS
cn/cir
reverse connection and arc transmission device control, self-protection cattle, can only be measured and not set by a single. The time plate can be below 2, and the dynamic device
interval time division
CB/T 3947 -2001
Appendix B
Welding defects according to the causes and preventive measures
The root cause of the defect is improper workmanship, and the detailed causes and preventive measures of welding sinkage are listed in 1
Table B1 Causes and preventive measures of welding sinkage Types of defects Bad welds Uneven seam size Low, too wide, too energy-efficient, 2 Length too long, too wide, too thick, and not in line with the center of the welder
4 Glass [Europe too, or the edge of the crack, 1 has a cut. 1. The wire is too long, too close or has an electrical connection. 2. The wire is not sent with the wire in the same way. 3. The wire is too bent, too small or has a shape or shape. 4. The melting depth is not enough: that is, the forming depth is too small and the center shift is too fast. 5. The material is cultivated and the welding process is too fast. 6. The landing point and the ground can be increased or decreased. When the car is uneven,
2 electric point Bin high judgment belt long,
3 month lack of positive quality fence poison need, slippery sliding quality smooth, "product theory sent people have.
2 bed flow product
3 use fascinated people learn a promise to protect the heart,
: take the head [protection?, the mouth is limited by flying objects, 5 copper slip source water
6 profit change period,
7 Welding is difficult, but there are tests, dynamic, oil socks, no gas, etc., and the
auspicious elimination method
1 when the huge pressure is increased, the courtyard is reduced
2 the length of the extension of the resistance is reduced.
save electricity and return the point.
4 increase the time, control the low heart rate caused by less than
5 will be the annual wire landing point and the position of the platform:
eliminate the fluctuation of the original group, the main motor keeps fast and fixed, 2 replace the conductive nozzle, adjust the warp and install the light, the conductive pipe must be 0T363u1-
-or must be within the public range, to prevent the total danger of the upper time Fluctuation. 1 Use a copper block that matches the machine, the village must be the original! The heart of the mouth and the heart are in harmony,
2 The back of the strong agent, the product is the medium
3 The single new adjustment is welded or, the ground is combined with the table, and the product is stolen from the stomach
1 Make the light block as the width of the book.
Make the copper grid raise to the center of the break:
1 Lower the center to the harmonic position,
Adjust the source point to the appropriate position
" The grid teaches the lead slip or the shape of the surface half the width, or the competition of the 2 shifts the center point between the dry mouth width hundred flat center position. 3 people
1 half blood tablets to reduce the details of each connection, some of the sales double effect whether it is enough to be me
increase the gas pressure, greater than 25L/mi, and keep the airflow smooth,bzxZ.net
1: speed large m/m/l need to take wind pat measures: 4 Xu connection process with the teacher to remove the flying noise of the mountain
: release the huge block to adjust the dissemination.
E inch year plan, light amount before 2 plus 250.h,
? Then remove the three kinds of pollutants such as tablets
on the end of the month and the car wire
CB/T 39472001
Appendix C
(Reminder Appendix:
Causes of faults in welding process and solutions to them. Faults of gas-electric automatic welding equipment that occur during welding can be checked and eliminated according to the contents of the manual. Causes of faults in welding process and solutions to them. Installation source type
Wire feed
Or weaving
Mao Zhang Shen pressure||t t||Light hill car
Conductive second
Deep sliding period:
Linkage is not field
Steel sliding is standardized
Automatic working
No leakage, the tower pool
Rise to a higher level
Door movement T work
A correct case, the pool
depth is too low
Electric end inner hole twisted and hung,
The production point is
2 Confirm that there is flying strong adhesion in the pregnancy.
1 The final effect of the lead is too variable
4 The absolute force of the wheel is insufficient
5 The wire of the laser wheel is pumped under the wheel. There is dust and ring formation. 6 The quality of the delivery wheel
: The price of the price is not T tax
2 The inspection of the calcium wire mechanism changes violently, and the double 3 ground connection is not solid,
4 The original connection is not normal. The selected reflux, the heart pressure cannot be matched,
1 Please ask the method, the afternoon is too much, the heart tension is not fixed,
6 L nozzle conduction is bad,
, hinder the design to close the fire data, set up not three theory
2 electric slope "Xu has left the word or out of Beijing.
35* made a mountain long pregnancy
1 three system pressure single entry: use
futures price according to or criminal situation back auction discount
? Electric lead point south cylinder over reading
1 cold water interruption into the request flood too
1 proof guard electric nozzle,
way method
2 clear the risk of the next item to replace the opening| |tt||3 Change the appearance of the guide wire soft reputation, restore its half-size greater than 30C or low port,
, the environment is too limited to send you, I, just not too big room, receive the knowledge state island control
5 Please roller
(fast new ratio
" clear the uneven accumulation of mercury,
type flushing heart source seven pressure changes flash element
3 trend:
4 capital month today open return to see the festival, snack aid, heart [difficult 5 clear system worry mouth clothes but not alive.
New electric belt
! Eliminate the unevenness caused by the internal
put the number of heart of the environment down you
1 dangerous workers forget to forget the rust and produce the numbness of the spirit surface light elimination, reduce the spirit pressure,
3 reduce enough attention to the change of the belt
: the arc point is the center of gravity of the test mold, rush to consult the relevant board to restore the water, keep the water flow too Ting 2L/e-lt
, the teacher replaces the point too much to the period of the book environment, stretch the arc by strict "make the average body weight its weight baking pool, move the electric strength back to the elimination block!
certify the market center
1 magnetic type of this face Qin cutting and other effects, fork the workpiece surface and pull the rough: 2 penalty you long years too tight
3 workers in the intersection of bright curve.
1 Early oil convex length into the certificate,
2 Early pure delivery unstable to let the certificate
electric to
low or use the heart to choose
conductive small
non-pressure to ensure the use of the area of the conductive medium
tight point Ning, shorten the wire Chang'an,
【line level sweep active magnetic wash surface: in addition to the night surface of the mine is not as good as,
weaken the tightness of the yellow life small
3 case collection end consumption interception, so that the number rail connection shrinkage war absorption points. A long
2 collection of the brand
3 low welding ratio high quality, or mining standard conductive tons, [adjust the mountain
2 open from the thickness ratio bright environment: or the mouth needle standard length should be conductive Oh
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