Xin Ding supply 70.7 cubic mortar triple compression test mode

Try to use touch: the Cangzhou City Ding Xin Test Instrument Co., triple tryout. Base made of cast iron, which have been planed down on both sides, the plane is equipped with two locating pins. End plates and the separator are made of flat steel manufacture, the composition of the mold cavity by each plane are polished. Clamps and clamping screw riveting into one, and with the pin together constitute clamping device for pressing or releasing end plates for quick loading and unloading. Mortar tryout Note: Die should pay attention to the end plate and the separator on the lower plane and the base plane must try to be, not from scratch, you can compress the model simultaneously, with a wooden hammer tapping on each plate, if necessary plane, so that closely aligns with the base. Pre-installed in the composition of the cavity mold need each other every surface coated with a thin layer of oil, then try to be the separator and locating pins to avoid skewing the mold cavity. After each stripping, immediately wipe the surface of each other more than expected and oiled rust. First, the main technical parameters: the cavity size: 70.7 × 70.7 × 70.7mm; Weight; tryout ordinary cast iron: 4.5 kg; thickness: 6 kg; Polish: 6 kg Second, the technical requirements within a tryout mortar surface should be mechanically process smooth, there should not be any blisters or defects. 2 tryout size of 70.7 × 70.7 × 70.7mm, 70.7 ± 0.1mm 3 on each side tryout surface irregularities within five, each no more than 70mm 0.05mm. After four assembled adjacent vertical surface Debu should not exceed ± 0.5 °. Third, the environmental conditions and temperature calibration with standard equipment 20 ℃ ± 10 ℃, relative humidity less than 85%, check around the site should be clean and free of vibrations affect the work and corrosive gases exist. A calibration standard equipment 2 steel ruler: Range 300mm, dividing the value of 1mm. 3 angle gauge: Range 180, dividing the value of 0.2 °. 4 calipers: Range 300mm, dividing the value of 0.02mm. 5 feeler: 10mm. Fourth, a calibration method using sensory evaluation, to comply with the requirements of Section 2.1.1. 2 with a vernier caliper, measure the length and height of each side, and its value should be consistent with the requirements of the appropriate size of the tryout. 3 steel straightedge and feeler gauge, measure the roughness of the inner surface of each tryout. 4 with angle gauge measuring the angle between adjacent surfaces too.