Welding Platform/Welding Plate

Welding platform
The material of the welding platform (splicing plate) is HT200-300. The hardness of the working surface is HB170-210. It has undergone two aging treatments (artificial aging and natural aging for 2-3 years) The product has stable accuracy and good wear resistance Welding platform (splicing plate) is a measurement benchmark for checking the dimensional tolerances of mechanical parts such as flatness, parallelism, perpendicularity, angle, straightness, etc. It is generally used for marking, grinding, process processing, marking, inspection, measurement, testing, welding, assembly, etc. of workpieces and precision parts. The precision of the welding platform (splicing plate) is level 0-3; Manufactured according to national standard JB/T7974-1999; The accuracy level shall be implemented in accordance with the national standard metrological verification regulations JJG117-91 Product Name: Welding Platform (Welding Plate)
Product alias: Welding Plate, Welding Platform, Cast Iron Welding Plate, Cast Iron Welding Platform, Flat Welding Plate, T-slot Welding Plate, Welding Foundation Plate, Welding Foundation Platform
Purpose of welding platform (welding plate): Used for welding processes of workpieces. Unlike riveting welding plates, there are no holes on top, and the working surface is flat or T-shaped groove. Welding plate material: High strength cast iron HT200-300, with a working face hardness of HB170-240. After two manual treatments (manual annealing at 600-700 degrees and natural aging for 2-3 years), the product has stable accuracy and good wear resistance.
Welding platform (welding plate) accuracy: According to the national standard metrological verification regulations, it is divided into four levels: 0, 1, 2, and 3.
Other measuring tools: cast iron flat plate, foundation flat plate, marking flat plate, inspection flat plate, riveting and welding flat plate, cast iron flat plate, pyrotechnic flat plate, fitter flat plate, grinding flat plate, scraping flat plate, sand pressing flat plate, testing flat plate, machine tool worktable (such as floor boring machine worktable), three seat standard flat plate, mold cushion plate, assembly flat plate (also known as assembly flat plate). Or: cast iron platform, foundation platform, marking platform, inspection platform, riveting and welding platform, cast iron platform, pyrotechnic platform, fitter platform, grinding platform, scraping platform, sand pressing platform, test bench (such as vibration test bench, abbreviated as vibration test bench), machine tool bench (such as floor boring machine bench), three coordinate platform, mold bench, assembly platform (also known as assembly platform). Welding Platform (Welding Plate) Specification: (Special specifications are made according to the buyer's drawings.)

Welding platform specifications

Specification (length x width)	accuracy class
	Level 0	Level 1	Level 2	Level 3
	Flatness Tolerance
200×200	5	10	20.5
200×300	5.5	11	22
300×300	5.5	11	22
300×400	6	12	24
400×400	6.5	12.5	25
400×500	6.5	13	26	66
400×600	7	14	27.5	70
500×500	6.8	14	28	68
500×600	7	14.2	28.5	71
500×800	8	15.5	31	78
600×800	8	16	32	80
600×900	8.3	16.5	33	83
1000×750	9	18	36	90
1000×1000		20	40	97
1000×1200		20.5	41	103
1000×1500		22	45	112
1000×2000		26	52	130
1500×2000		28	56	140
1500×3000			70	174
2000×3000			74	184
2000×4000			88	219

Inspection methods for welding platforms (welding plates)
1. There should be no rust, scratches, bumps, or other appearance defects on the working surface of the welding platform (welding plate) that affect its use.
2. There should be no casting defects such as sand holes, air holes, cracks, slag inclusions, or shrinkage porosity on the working surface of the welding platform (welding plate). Each casting surface should be thoroughly cleaned of molding sand, and the surface should be smooth and painted firmly. All edges should be smoothed.
3. The T-shaped groove should have installation handles or lifting positions, threaded holes or cylindrical holes on the opposite sides of the flat plate. When setting the lifting position, consideration should be given to minimizing deformation caused by lifting.
4. The welding platform (welding plate) should undergo stability treatment and demagnetization.
5. The vertical tolerance between the working surface and side, as well as adjacent two side surfaces of the welding platform (welding plate), is level 12 (according to GB1184-80 "Shape and Position Tolerance").
6. The hardness of the welding platform working surface should be between HB170-220 or 187-255.
7. The main inspection items for T-shaped grooves are A, material, and surface hardness. B、 Shape and position tolerances, including nominal dimensions and perpendicularity tolerances. C、 appearance. D flatness. E、 Contact spots. F、 Plane fluctuation. G、 Allowable deflection value for the working face. H、 Surface roughness.
8. Precision parameters. There is no requirement for contact spots on Level 3 tablets. Level 1 flat plate requires no less than 20 contact spots in any 25 × 25mm plane. Level 2 flat plate requires no less than 12 contact spots in any 25 × 25mm plane