Talking about the monitoring of cutting tools in the cutting process
Although there is currently no dominant position, some other automakers have long been concerned about composite cast iron and magnesium. If you can't change with the dry tool technology, you can safely say that the development will cut, they first consider whether to use oil mist to cool, and then consider the water around the hard, dry, fast three words. As for oil mist cooling, it has significant advantages over sufficient cooling, including: better lubrication, avoiding thermal shock, reducing the amount of oil used to 1/60,000, and keeping the chips and workpieces dry. In the coming years, tool manufacturers will use oil mist cooling in processability. Obviously, these manufacturers are working on new materials and new processing methods to determine the geometric angle to reduce cutting friction. The primary concern continues to be in the tool life equipment suction system to eliminate oil mist smoke and chip life and productivity. For these reasons, technologies such as high-speed dry cutting and micro-cooling lubrication systems will further promote chipping. In addition, tool procurement methods and management methods will change to adopt faster feed rates to improve the prediction of the future, but as companies reduce tool life and control cutting heat. It is proposed to use the low-pass digital filtering algorithm to monitor the tool breakage by using the milling torque signal. The milling torque was measured using a cutting force telemetry shank with a force sensor and an inductive power supply. The milling cutter used in the experiment was a high-speed steel spiral groove three-tooth end mill, and the workpiece material was tempered 45 steel. (Finish) PVC pipe is extruded by hot pressing method after the cooperation of PVC resin, stabilizer and lubricant. It is the earliest plastic pipe developed and applied.
PVC-U pipe has strong corrosion resistance, easy adhesion, low price and hard texture. However, due to the leakage of PVC-U monomer and additives, it is only suitable for water supply system with transmission temperature not exceeding 45 ℃. Plastic pipes are used for drainage, wastewater, chemicals, heating and cooling fluids, food, ultra pure liquids, mud, gas, compressed air and vacuum system applications.
PVC pipe fittings include direct connection, tee and cross joint, and the tee is divided into 45 degrees and 90 degrees.
Advantages of PVC pipe PVC chemical pipe, PVC pipe fittings, PVC tube fitting, PVC hose, PVC pipe, PVC hose fitting Glove Industry Co.,Ltd. , https://www.glovemech.com
1. It has good tensile and compressive strength, but its flexibility is not as good as other plastic pipes.
2. Small fluid resistance: the pipe wall of PVC-U pipe is very smooth and has little resistance to fluid. Its roughness coefficient is only 0.009. Its water transmission capacity can be 20% higher than that of cast iron pipe with the same pipe diameter and 40% higher than that of concrete pipe.
3. Excellent corrosion resistance and drug resistance: PVC-U pipe has excellent acid, alkali and corrosion resistance, is not affected by moisture and soil pH, and does not need any anti-corrosion treatment during pipe laying.
4. Good water tightness: the installation of PVC-U pipe has good water tightness whether it is connected by bonding or rubber ring.
5. Anti bite: PVC-U pipe is not a nutrient source, so it will not be eroded by rodents. According to the experiment conducted by the National Health Foundation in Michigan, mice will not bite PVC-U pipes.
6. Performance test: curing time shrinkage splitting strength tensile property peel strength thermal stability application period storage period release of harmful substances.