FLOW TABLE (CEMENT)-HAND OPERATED - GUNMETAL TOP - (ASTM C230)

Compliance with following International Standards:

ASTM C230, ASTM C1437

Application:

Used to determine the consistency of mortars and building lime.

Brief construction description:

The flow table apparatus consists of an integrally cast rigid iron frame and a circular rigid table top 10 ± 0.1 in [255 ± 2.5 mm] in diameter, with a shaft attached perpendicular to the table top by means of a screw thread. The table top and shaft with contact shoulder will be mounted on a frame in such a manner that it can be raised and dropped vertically through the specified height of 0.500 ± 0.005 in [12.7 ± 0.13 mm] by means of a rotated cam.

The table top will have a fine machined plane surface, free of blowholes and surface defects. The table top will be of bronze, having a Rockwell hardness number not less that HRB 25 with an edge thickness of 7.5 mm, and will have six integral radial stiffening ribs.

The table top and attached shaft weighs 9 ± 0.1 lb [4.08 ± 0.05 kg] and the weight will be symmetrical around the center of the shaft.

Cam & Shaft:

The cam and vertical shaft will be of medium carbon machinery steel, hardened on the end of the shaft contacting the cam and the tip of the cam contacting the shaft. The shaft will be straight and the difference between the diameter of the shaft and the diameter of the bore of the frame will be not less than 0.002 in [0.05 mm]. The end of the shaft will not fall upon the cam at the end of the drop, but will make contact with the cam not less than 120° from the point of drop.

The face of the cam will be a smooth spiraled curve of uniformly increasing radius from 1.2-11.4 in [13 - 32mm] in 360° and there will be no appreciable jar as the shaft comes into contact with the cam. The cam will be so located and the contact faces of the cam and shaft will be such that the table does not rotate more than one revolution in 25 drops. The surfaces of the frame and of the table that come into contact at the end of the drop will be maintained smooth, plane, and horizontal and parallel with the upper surface of the table and will make continuous contact over a full 360°.

Flow Mould:

The conical mold for casting the flow specimen will be made of cast bronze or brass. The Rockwell hardness number of the metal will be not less than 25 HRB. The height of the mold will be 2.00 ± 0.02in [50.0 ± 0.5 mm]. The diameter of the top opening will be 2.75 ± 0.02 in [70.0 ± 0.5 mm]. The diameter of the bottom opening will be 4.00 ± 0.02 in [100.0 ± 0.5 mm]. The surfaces of the base and top will be parallel and at right angles to the vertical axis of the cone. The mold will have a minimum wall thickness of 0.2 in [5 mm].

Supporting Frame:

The supporting frame of the flow table will be integrally cast of fine-grained, high-grade cast iron. The frame casting will have three integral stiffening ribs extending the full height of the frame and located 120° apart. The top of the frame will be chilled to a depth of approximately 1.4 in [6 mm], and the face will be ground and lapped square with the bore to give 360° contact with the shaft shoulder. The underside of the base of the frame will be ground to secure a complete contact with the steel plate beneath.

Following accessories will be the part of standard supply:

1. Flow table mould Specifications as per ASTM   1 No
2. Tamper Steel,                             1 No