Technical Requirement of Concrete Pole Mould of CICQ Industry

1 Basic Requirement

1.1 The concrete pole mould should meet the standard requirement and be made according to the drawing authorized by regulatory procedure and technical documents.

1.2 The safety and sanitary requirements of design and manufacture of products should conform to GB 5083.

1.3 The general tolerance of linear dimension of drawing should conform to M Level of GB/T 1804-1992 in machining working parts; and the non-machining parts should conform to C level of GB/T 1804-1992.

2 Requirements of Main Parts

2.1 segmented moulds

2.1.1 Deviation of space of adjacent two running wheels is ±1mm.

2.1.2 The perpendicularity connecting surface of flange with cylinder center line tolerance is 0.25mm.

2.1.3 A seam no more than 0.5mm is allowed on the parting surface of tongued and grooved board; the seam more than 0.5mm and less than 1mm is on half mould. The single segment length should be not more than 100mmm. the accumulated length should not be more than 1/10 of segmented mould; seam more than 1mm is not allowed.

2.1.4 The grade of tolerance of diameter of supporting board and holder mouth of connecting flange is IT9. The maximum allowable value of surface roughness R is 6.3µm.

2.1.5 The defects such as crack, hard spot, delamination, scars and rusting are not allowed on the inner surface of moulds.

2.1.6 When process with riveting, a hole no more than 1mm is allowed around the rivet of inner wall of moulds, however should be rounding off.

2.2 Running Wheel

2.2.1 The tolerance grade of diameter of working surface is IT9 and the maximum allowance value of surface roughness R is 12.5um.

2.2.2 The grade of tolerance of inner diameter supporting positioning is IT9. The maximum allowance value of surface roughness R is 6.3µm.

3 Requirements of Materials

3.1 The materials should conform to the regulations of GB/T699 and GB/T700. The mechanical performance of moulds, tongued and grooved board, ribbed slab, flange materials should not go lower than the requirements of Q235-A; the mechanical performance of bolt should not be lower than than 8.8 grade of GB/T 3098.1-1982, the mechanical performance of nut materials should not be lower than 8 grade of GB/T3098.2-1982.

3.2 The steel casting should conform to the regulations of JC/T 401.2-JC/T 401.4. And mechanical performance of running wheel materials should not be lower than requirements of ZG270-500 of JC/T 401.2-199.

4 Welding Requirements

4.1 The welding should conform to the regulations of JC532. And the surface quality of welded joint between running wheel and holding flange, connecting flange and end flange and moulds should not be lower than Ⅲ grade of JC 532-1994.

4.2 Assemble RequirementsThe weld-seam on the inner surface of mould should be finished and maximum allowable value of grinding surface roughness is 25µm.

5 Assembling Requirements

5.1 The dimension limit deviation of inner diameter of mould is +2, -1mm; the dimension deviation of inner diameter of parting surface is +4, -2mm and should be rounding off.

5.2 The deviation of tessellation line straightness of inner surface of mould in the full length range is L/2500 but should be no more than 5mm.

5.3 The length deviation of mould should not be more than 0.5%.

5.4 Joint gap of inner surface is no more than 0.25mm; the circular gap of connecting the inner surface of flange is no more than 0.25mm.

5.5 The joint displacement of inner surface is no more than 1mm; inner surface of connecting flange is no more than1mm and should be grinded smooth. The grinding inclination is no more than 1/100, the matched displacement of connecting flange is no more than 1mm.

5.6 The distance of running wheel is 2m and the deviation should not be more than 2mm; any tread of two running wheels is integral multiple of 2m. And deviation is not more than 4mm.

5.7 The axiality tolerance of running wheel and mould Φ is 2mm.

5.8 After the link bolt is fastened, the nut should come out of bolt, but the emerging length is not more than 15mm.

6 Appearance Quality

6.1 there should not be burr, sharp edge, welding slag and bruise such defects.

6.2 the placement of longitudinal and circumferential slabbed plate should be straight and flat.

6.3 After the linked bolt is fastened, the external side of link lock should not incline toward the parting surface.

6.4 the painting requirement should conform to the regulations of JC/T402.

7 Requirements of Test Run

7.1 Non-load running of mould should be steady and no abnormal noise.

7.2 Loaded running of mould should be steady and no abnormal noise. And there will no be paste leaking occurring on the joints and flange connection when running with loaded.