ASTM B265 GR12 Titanium Clad Plate

A. The quality of the titanium plate shall conform to ASTM B265. The quality of the ASTM B265 GR12 titanium clad plate shall comply with ASTM B898, standards or provisions agreed by both parties.

B. The selected titanium welding wire shall comply with the provisions of GB/T 3623-1993.

C. When products have special requirements for weld quality, corresponding requirements shall be put forward for welding wire quality; The welding rods, wires and fluxes for the welding of carbon steel, low alloy steel, and stainless steel shall comply with the provisions of GB/T5117-1995, GB/T5118-1995, GBm983-1995, GB1300, GB4241, GB5293, and other relevant standards. D. Cerium tungsten electrode is recommended for DC argon arc welding with tungsten electrodes, and its quality shall comply with the provisions of GB4191. The argon used for welding shall comply with the provisions of GB4842. E. The confirmed qualified materials shall be marked. If the marks are to be cut off during the manufacturing process, the complete set of original marks shall be transferred to the place where the marks can still be seen after the completion of the container manufacturing.

D. The sign can be written in water-insoluble, metal pigment-free, sulfur-free and chlorine-free ink, and can also be hard printed, but the hard print shall be made of titanium alloy or austenitic stainless steel, and the hard print with minimum stress, round head, and dotted line shall be used. F. Minor defects of materials can be repaired only after the inspector and user representative agree on the repair method and scope. Any defective material that cannot be repaired to a satisfactory degree shall be rejected.

 

The demander can re-inspect the received products. If the re-inspection results are inconsistent with the provisions of the relevant standards, it shall propose to the supplier within 3 months from the date of receipt of the products, and the supplier and the demander shall negotiate for a settlement.

Composite plates shall be submitted for acceptance in batches, and each batch shall consist of products with the same brand (composite/base material) category, composite melting furnace number, specification, state, and processing technology.

The chemical composition of the composite material shall be reported according to the chemical composition of the original ingot, and the chemical composition of the base material shall be reported according to the original certificate of conformity. For mechanical property and process property inspection, take one piece from each batch of products, and take one transverse sample according to the test items (shear sample is not specified). It is allowed to cut samples from test plates or leftovers of the same production cycle and process.

The combined area of composite plates shall be inspected one by one. For composite plates with high bonding strength used for transition joints, flanges, etc., which are not allowed to exist in the bonding zone, and composite plates with titanium material as strength design or special purpose, comprehensive flaw detection is required; For composite plates that use titanium as corrosion resistant design without considering its strength, it is required to conduct continuous flaw detection within the range of 50mm around, and other grid flaw detection along the distance of 200mm. The overall dimension and surface quality of composite plates shall be checked one by one, and the thickness of composite materials can be measured by taking one plate from each batch.

In the inspection of mechanical properties and process properties, if the result of one sample is unqualified, double samples shall be taken from the original tested plate (if the size of the original tested plate is not enough, another sample can be taken from the same batch of products) or test plate for the re-inspection of the unqualified item. If the result of one sample is still unqualified after re-inspection, the batch of products will be scrapped, or the unqualified items will be re-inspected one by one, and the qualified ones will be re-grouped and delivered.

1. The machining allowance shall be reserved during the cutting of the scribing titanium plate, and attention shall be paid to the reasonable layout to improve the material utilization rate.

The marking of the titanium-steel composite steel plate shall be carried out on the base layer as much as possible, and it is forbidden to punch holes on the titanium plate.

Use metal pencil to draw lines on titanium plate as much as possible.

Punching is allowed for the parts that can be eliminated in future processing.

2. Blanking of titanium material and titanium-steel composite steel plate can be done by flame cutting, plasma cutting, punching and shearing, or mechanical processing.

A. When flame cutting and plasma cutting are used, because titanium is easy to oxidize at above 300 ℃ and has low thermal conductivity, titanium is easier to cut than ordinary steel, and the gas cutting speed is 4~5 times faster than the steel plate with the same cutting speed. After titanium gas cutting, there is a gas pollution layer on the surface of the cut, and its pollution.

The depth of the contaminated layer is about 2mm, which must be removed by mechanical methods.

B. When ASTM B265 GR12 Titanium Clad Plate is machined, the base layer shall be downward; During flame or plasma cutting, the composite plate shall be sufficiently high from the ground, and the clad layer can be upward or downward. The oxide layer of the cut must be removed before welding.

C. The cut groove surface shall be free of cracks, delamination, and slag inclusion. d. The cylinder blanking size must be determined according to the actual forming size of the head.