[China Aluminum] In the production process, measuring tools are the weapons in the hands of aluminum inspection personnel. If the weapon is in a semi-paralysed or damaged state, the inspection result will be meaningless, and the quality of aluminum products will not be supervised and controlled. Therefore, the maintenance and care of measuring tools are very important. The following are the maintenance specifications for several measuring tools (applicable to commonly used aluminum mold inspection tools): Closed End Blind Rivets,Closed End Pop Rivets,Closed End Aluminum Rivets,Aluminum Closed End Pop Rivets KD METALS (JINGJIANG) CO.,LTD , https://www.toprivet.com
1. Do not use whetstone or emery cloth to grind the surface of the gage, the measuring surface and the part of the marking. Non-metering maintenance personnel are strictly prohibited from disassembling, refitting, and unauthorized repair of the gage.
2. The storage location of the measuring instrument should be kept clean and dry, free of vibration and non-corrosive gases, and away from places where the temperature change is large or where there is a magnetic field. The gauges stored in the measuring case should be clean and dry, and no other debris should be stored. 3. Do not touch the measuring surface of the measuring instrument by hand. The sweat and other dirt on the hand will contaminate the measuring surface and cause it to rust. Do not mix the measuring tool with other tools and metal materials to avoid touching the measuring tool. 4. After using the measuring tool, clean the surface stains, aluminum chips, and loosen the fastening device. When it is not used for a long period of time (more than one month), apply anti-rust oil on the measuring surface. When the gage is not in use, it should be put into a protective box, and it should be used by full-time professionals, and be responsible for the annual audit records that the gage is tested by the authority. 5. Do not use the tip of the caliper's gripper as a stylus, compass or other tool. Do not twist the two jaws or use the gauge as a card. 6. When there is a burr on the surface of the workpiece, be sure to remove the burr before measuring, otherwise it will cause the gauge to wear, and it will also affect the accuracy of the measurement results. The maintenance methods and precautions of some common aluminum factory gauges:
1. Dial gauges and dial gauges for aluminum mills 1.1 The dial gauges and rods must be wiped before use.
1.2 Before using the dial indicator, the probe should be compressed so that the pointer rotates at least 1/6 turn.
1.3 The stability of the indicator value should be examined before use. In the zero position, the rod is moved quickly or slowly. Now look at the change of the indicator value. When the indicator value changes by more than 0.3 scale, The following questions should be considered: a. Whether the clamping part of the dial indicator is loose or not; b. Is the fastening of the bracket loose? c. If there is no first two conditions, then the dial indicator itself has a problem, please submit the measurement verification. Personnel handling.
2. Aluminium profile micrometer 2.1 The zero position must be checked before use. If it is not at zero position, it should be sent to the measuring room to zero.
2.2 Because dust, debris, and oil can cause errors of a few microns, the object to be measured must be cleaned with gasoline or a soft cloth or paper, and then measured.
2.3 When measuring, the object to be measured must be gently in contact with the measuring head. If the force is too great, it should be returned a little.
3. Leverage Dial Indicator and Lever Dial Indicator 3.1 Keep clean, dosing, and shafts free of oil.
3.2 When the watch is installed on the measuring station, the measuring head shall be toggled to observe the stability of the indication of the hands of the hands. The dial shall be aligned with the desired “zero†position and measurements can be taken.
3.3 In use, pay attention to make the axis of the measuring head perpendicular to the measured dimension line. If for some reason, the measurement head axis is impossible to meet the requirements, then the number to be read must be multiplied by cos α (α-measurement head axis and The angle of the measured surface is corrected.
4.Aluminum vernier caliper 4.1 Before measuring, the measuring surface and guide surface of the caliper should be wiped clean;
4.2 Move the frame to the measuring surface and touch each other. Check the "zero" score line coincidence on the ruler and cursor.
4.3 Do not use excessive measuring force when measuring. It should be the force that gently pushes through the finger of the mother's finger, otherwise it will affect the measurement accuracy.
4.4 When reading the measurement results, the line of sight should be perpendicular to the scale surface.
5. Aluminium Profile Diameter Inner Diameter Dial Gauge is a precision measuring tool for measuring the inner hole size. It can be used to measure the dimensional deviation of the hole diameter from 6mm to 450mm and the roundness and cylindricity deviation of the hole. It is an indispensable part of the industrial sector. One of the measuring instruments.