After the cement pipe machine mold assembly Test Method
1. cement pipe inner diameter of the mold
After the mold with calipers or steel ruler, steel tape measure, respectively, the inner diameter of the cylinder mold cement pipe ends, hekou direction and the vertical direction, the die of the same cross-sectional size larger than the inner diameter hekou direction perpendicular to the direction of 2-4, and the transition should be smooth .
2. cement pipe mold nominal length
Steel tape measure, the length of the mold nominal size limit deviation + 4 / -3.
3. The end of the mold and the gap with the barrel
With a feeler, with the gap end mold and barrel: centrifugal mold is not greater than 1, no more than 2 other molds.
4. cement pipe inner surface of the mold gap hekou
With a feeler, the inner surface of the mold hekou Gap: 0.4 centrifugal mold is not greater than, other molds of not more than 0.8.
5. After the cement pipe mold assembly cylinder wall dislocation
Steel ruler to measure, after the mold assembly cylinder wall displacement is not greater than 0.8.
6. Centrifugal cement pipe mold assembly after two running wheel and coaxial cylinder
After assembly is placed in a mold test cement pipe on its centrifuge with a dial indicator measuring surface runout ends after two tubes running round the mold assembly and cylinder concentricity error: When the mold is not greater than the nominal diameter of 1000mm when the deviation is less than Φ1.5; when the mold is greater than the nominal diameter 1000mm when the deviation is less than Φ2.
7. centrifugal cement pipe mold running from the wheel rim
Steel tape measure, limit deviations centrifuge tube mold running wheel rim distance is -5 / + 2.
Bolt nuts should be exposed at length 8. Tighten bolts hekou
Steel ruler measurements, should be exposed bolt after bolt hekou tighten the nut, which is exposed length of not more than 15.
Steel ruler to measure the outer surface of the mold should be free of burrs, sharp edges, welding slag and bumps and other defects affecting the appearance quality of welded joints combined with surface dislocation at not more than 1.
10. The appearance requirements
Visual and hand measurement, vertical, straight loop configuration to the ribs, the outer surface of the mold paint shall comply with the requirements of JC / T 402's.
11. A load test
The smooth cement pipe mold and the mold is placed in line with the corresponding requirements of the cement test tube forming machine, according to specified in Table 1 rpm, no less than 10min, mold-load operation should be smooth, no abnormal noise.
Table 1 cement pipe mold load test speed in revolutions per minute
Project Title Die mm nominal diameter
To 300 400 to 600 700 to 900 from 1000 to 1200 from 1350 to 16,501,800 ~
Mould tube speed 3,002,001,501,008,060
Suspended roller tube mold speed 15010075604030
12. Load Test
The use of units, production of three to five test tubes, test load mold should be smooth, no abnormal sound, and when the load operation commissure mold and molded end connections should not leak slurry.