1. titanium steel composite drums plus underlining, the following must be protected before the following. Prevent surface titanium recycling surface scratches and iron ion contamination. The source of this article, pressure vessel library. Titanium bar manufacturers
2, Scribing of titanium steel composite panels should be carried out on the composite layer, underlining should try to use a metal pencil, only those allowed to be removed in future processing steps.
3, The position of the titanium steel composite plate is partially uncomfortable and material sampling (including rolling direction) should be fully considered. Titanium rod manufacturers
4. Re-tested material should be previously prepared and made pleasant time, marked, labelled, and flowed. 5.
5. Titanium composite leaves must be planned in two lines:
One line is the baseline of the cylinder; the source of this article, Pressure Vessel Library.
Line B is the titanium recovery, groove processing line.
6. Strictly control the accuracy of titanium alloy rod tide, diagonal error can not exceed 2mm.
7. the following sizes should be reviewed again at the end of scribing. And strictly fulfil the checking system.
Second, the determination of the length of titanium steel composite barrel.
1. Titanium composite barrels must be based on the exhibition size of the head. 2.
2, The larger the diameter of the titanium composite barrel, the smaller the exhibition of multiple cylinders, the smaller, the harder the length of the slit weld, the more difficult to control and master.
3, the thicker the wall thickness, the worse the plate flatness, also follow the principle of final reordering of the last side (head) (the main consideration is that the elongation of titanium composite plate in the process of curling will increase).
Third, titanium steel composite plate cylinder]
1. Titanium steel composite drum cutting and groove processing should normally be done using machinery, mainly shears, milling machines, semi-automatic flame cutting machines, planing machines. The source of this article, pressure vessel library.
2, Titanium steel composite plate should be strictly controlled in shearing:
The shell of the shear knife.
B should bring the steel substrate to the bottom, pay attention to prevent the number of layers.
3. In titanium recovery, attention should be paid to strict control of the knife cutter. Titanium recovery if milling is difficult, if milling is discarded and carbon steel base layer.
4, Titanium steel composite barrels with large thickness or irregular shape, also allow cutting out of flame or plasma. At this moment, pay attention to the following points:
a should avoid spattering on the surface of titanium, which produces iron ion contamination.
B and cut edges and grooves remain coated by mechanical means and remove the contaminated layer.
Custle must take into account the size of the subsequent slope in order to leave a certain processing margin.
5, Titanium steel composite rod slope end, re-examination must be carried out before the cylinder length and dimensions of the groove slope is reviewed. Prevent the occurrence of dimensional deviation.
Fourth, the production of titanium steel composite cylinder header (tower):
1, according to the diameter of the equipment barrel, select the matching arc template.
2, wall thickness titanium steel composite plate can be processed in the bending machine:
Prohibit the use of bending machine with lower pressure head knife right-angle tooling, must use the arc tooling;.
B must press the RC area in the titanium steel composite plate in the R arc area.
3. titanium steel composite panels with relatively thick wall thicknesses and bending machines can be selected by choosing the appropriate tooling on the hydraulic press.
4. it is forbidden to use 3 sticks or other processing methods for the manufacture of heads (fillets) of titanium steel composite drums.
5. titanium steel composite barrels. school ring production:
1. the roll surface must be cleaned. The source of this article, pressure vessel library.
2, Roller rolls, must be checked for contaminants on the school panel. Damaged stickers must be restarted.
3. Prepare the appropriate internal and external.
4. The operator must be able to master the performance of the roller panels. Other non-professionals are prohibited.
5. minimise the number of cylinders to return during cavalry.
6. Strictly control the groups of titanium steel composite rods.
7. Forcing mandatory groups and prohibiting the use of large hoes to strike and hammer with the body.
8. For large diameter larger, the roll must be rolled and campus. 9.
9, By inspection, it must be carried out in accordance with the requirements of the product test plate. 10, At the cost of each housing body.
10, well done in the recording of the costs of each housing body. As well as the subsequent sections, the header team has a good matching job.
Sixth, the protection of the edge of the edge when welding base: welding. 1:
1. titanium steel composite plate equipment using manual electrode arc welding welding welding welding inner groove welded to the edge of the plate or brush the protective agent to effectively protect the edge of the composite layer. Prevent spatter injuries and complex surfaces.
2, composite plate equipment by hand argon arc welding carbon steel partially adopted, the back of argon gas protection. 3.
3. The same situation should also be strictly control the line energy when the base. Control the temperature of the intermediate layer, the welding process at the grass-roots level to prevent the welding area of the laminated.
Seven, the composition and formation of thorns. 1:
1. Poor working conditions and more importantly composite plate equipment, spurs should be applied to materials using good plastics with a small content of impurity elements. If the complex layer is TA2, the spurs should be applied using TA1; when the complex is TA9, the spurs should be applied to the matching material (specified according to the rules of the process documentation). Source of this article, Pressure Vessel Library.
2, stab in front of the pressure gauge, the heating temperature can not be too high (titanium materials for 250-350 ℃), does not occur oxidation phenomenon. Pay attention to the protection of the surface of the stabbing tape when pressing the stabbing. Clean up the mould to prevent iron ion pollution.
3. 100% colouring inspection must be carried out at the arc. If there are cracks, pits, etc., they must be replenished and checked before use. Must be supplemented and checked can be used.
VIII. Requirements before sticking paper:
1, must be performed after the cross line related, steel welding through. Including acquisitions, manholes, equipment flanges, and so on.
2, the entire body surface (in the welding groove) should be thoroughly cleaned of contaminants.
3, Provisions, pads and complex welding areas should be polished surface oxides, and then cleaned with silk cloth or brush acetone. If necessary, it is necessary to blow with a strong electric hair dryer. No silk or brush residue on the surface.
4. any welding (TIG) must be carried out within 4 hours of cleaning. Otherwise it should be re-cleaned.
Welding environment:
1. The operator must wear clean feet, gloves and other protective items. 2.
2. Bourgeois welding must not be done in a cartridge with strong ventilation and compressed air when welding facilities such as electric fans are in use.
3, Wires must be wiped with acetone and should be properly placed. It cannot be stepped on.
4, The welder's floor must not be pressed directly on the surface of the composite layer to avoid arcing. Source of this article, Pressure Vessel Library.
5, welding area is relatively independent, closed, conditions can be made pound plug.
Ten, the group with point welding:
1, welding BOSS group distribution to ensure clean area clean. Ensure that the fit gap between the stinger and the cartridge.
2, In case the fitting gap is greater than 0.5mm, you must press the staff to fix it with a jack. 3.
3. Do not use a hammer to heat the locating joints when a gap exists. Ensure that the locating weld joints are silver-white.
4, When there is a pad under the puncture, the weld disc point should be welded first. The pad should not be higher than the complex surface.
5, titanium recycling and titanium stickers between the positioning point of the weld spacing of about 50 mm, the left side of the two welds should be disadvantageous positioning weld points. Try not to disturb the wires when positioning the weld.
xi, Welding process:
1. The welding process must be carried out in accordance with the welding process for composite panel equipment (including pipes). If there are special regulations, they shall be met. xi.
2. The welding of composite panel equipment used for working conditions and important composite panels is generally divided into two layers of welding. The first layer of self-fusion, the second layer of filler; wire should be selected than the plasticity of the base material, the amount of impurity elements is very small, the diameter is appropriate. (Specific wire larger and specifications should be strictly enforced in the welding process card).
3, the welding current should not be too large (generally not more than 200a), the welding speed should be as fast as possible (usually need to reach 20-30 cm / min), strict control of the temperature of the welded layer is less than 60 ° C. In addition to this, the base material and the welded area of the composite layer of the bonding strength will be reduced and fall off. Even the steel base layer melts and severely affects the welding properties of the spurs.
4, ring welding, head welding, should be used uphill welding or welding position. Strictly prohibit the use of downslope.
Twelve, welding protection:
1, composite bracket welding must be protected by inert gas in the welding and heat-affected areas of the high-temperature region.
2, the front of the front shape and size of the protective cover is protected, the rear surface from the appropriate leakage hole position expansion.
3, When using the protective cover, it should be tightened and moved with the welding torch. However, it is not possible to affect the movement of the welding torch.
4. The protective cover must not be moved laterally during use. Never leave the surface of the splinter. Source of this article, Pressure Vessel Library.
5. There is no oxidation in the bottom weld path or in the cover weld. If there is oxidation, it must be fabricated and removed for rewelding.
6. there is oxidation on the weld head. Oxidation must be removed prior to re-sale welding. This includes oxidation that occurred during spot welding.
titanium-steel composite rods, header pipe scribe openings. 1:
1. Determine location lines from orientation of accompanying drawings. Source of this article, Pressure Vessel Library.
2, in the position of the mouth to do a good job, sign check.
3, oxygen, can use acetylene flame.
4, generally open from the foreign exchange, for the thickness of the thickness of the titanium steel composite plate thickness must first use a pistol drill through the through-hole of φ6 gas. And highly supported splash protection. The source of this article, pressure vessel library. 5.
5. Combine the outer dimensions of the tube for physical one-to-one modification and polishing.
6. Remove the equipment in the equipment tube, generally speaking, usually use φ100 angle grinder.
7. The above steps must be completed before support.
Fourteen, liner and liner, liner, over-treatment:
1, Titanium liner larger than φ108 is formed by bending. Titanium liner smaller than φ108 is a seamless tube. Pay attention to the rolling direction of titanium material and the surface protection of titanium material when the following materials are used. 2.
2. It is necessary to control the ellipticity of the liner and the welding angle during the curling process. Prevent the pipe and liner assembly gap is too large.
3. All tubes, manholes, bumps, AB welds must be pre-drilled and leak holes and TIG welded openings. Prohibit openings in stress concentrations. Such as labelling.
4, Titanium pads, titanium liners, flakes must be performed on waterjets with edges on lathes. The use of oxygen and acetylene gases is prohibited.
5. All tubes, manholes, bumps, titanium liners, etc. must be cut into the liner. The insert must be cut into the lining, andcleaned on sharp corners, burrs, corners ground r-arc.
Note: The quality of welds on liners and flanges is also in the middle, and leaks from the equipment will also appear here!
XV. Composite side butt joints, reinforced covers
1. Count the number of titanium sticker welds and strengthen the cover according to the summarised results. 2.
2. The reinforced cover must be pre-used according to the different stabilisers to be pressed and processed using the moulds and tested to be satisfactory.
3, In the reinforcing cap assembly, soldering shall be performed in strict accordance with the method used for previous titanium stabilisation.
xvi, Silver brazing. 1:
1. Silver brazing shall be used only for the purpose of weld leakage testing of the sealing effect.
2, Silver brazing can only be used to weld between titanium and steel, it cannot be used as an alternative to other strength welding methods.
3, Silver brazing is different from other welding methods, you must specify a special training qualified personnel to weld.
4, silver wire diameter in φ2.0, disc wire, 180A-200A current. 5, when eliminating the titanium steel composite welding, it can only be used between titanium and steel.
5, silver brazing is a normal phenomenon when eliminating the stress treatment of titanium steel composite plate equipment.
Note: Due to the price of pure silver 6 yuan / gram, not all titanium steel composite plate equipment to use this process
17. to protect the sealing surfaces of titanium steel equipment:
1. Titanium sealing surfaces must be treated on drawings ASME Waterline requirements.
2. the drawings require the necessary titanium sealing surface anchorage protection.
3. must take welded titanium taking sealing surfaces.
4. All welded connections to the sealing surface on the earth wire are prohibited.
5. Require a blue spot test for poorly used equipment, and the failed area must be polished. 6.
6. Packaging protection for all equipment tanks must be performed on all equipment tanks prior to transport. 7.
7. Prohibit the use of equipment components during transport, transport, etc. to the lift point to prevent the sealing surfaces from being exposed. To the lifting point, prevent collisions on the sealing surfaces.
Leaks and other defects:
1. First identify the location of the leak and mark it as a bad leak. 2.
2. Welding process personnel will produce defects based on leaks. Develop a rigorous, reliable rework programme. 3.
3. All returns involved should follow the rework process to the letter. Prohibit direct influence on the quality of repair. Source of this article, Pressure Vessel Library.
4. the inspector must follow up on that area of supervision upon return.
19. Welding test:
1. cushioning. burning. poking. welding using the following methods after covering the weld:
a visual inspection (surface colour)
b Colour penetration test
C Ventilation test
2. Passing of equipment rollers must be saved with jackets after passing. 3.
3. riveted and welded, etc. That shall not be required for the rectification of the effects of quality problems and promote. 4.
4. The inspector keeps the operator's records and archives. The inspector shall have the right to prevent infringement of the process and to impose financial penalties. 5.
5. The workshop shall be customised for important operations such as cleaning, welding and cold.
XX. Supplementary provisions. 1:
1. Titanium screws must be welded with steel bolts. 2.
2, must extend the test time. The source of this article, Pressure Vessel Library.
3, The temperature of the tube welding high. 4, The form of zirconium material is not applicable.
4, The form of zirconium material is not suitable for ω structures.
