On the morning of September 28th, 2014, Wang went to a community in Chiping County and turned the window into the home of the resident Zhao. After drinking the drink, he stored the gold necklace and gold ring worth more than RMB 12,000 in the bedroom of Zhao. Ear studs and other items were stolen. In the middle of the night on November 14, 2014, Yang Mou’s neighbor, a villager in Shenzhai Town, Fuping County, even took a job without a chance. He first entered the yard through the gate and took away 3 bags of corn from the east side of the gate and placed the bag. Go to the cottage and throw it on the ground, and then take it home. Reminder: Please install the necessary guardrails, anti-theft windows and other protective facilities at home. When no one is in the house, you must close the doors and windows, and do not store large amounts of cash and valuables at home. On September 19, 2014, the glass of a modern car parked in front of a sales department of the Baiting Office in Xiping County was smashed, and 15,000 yuan in cash, ID cards and bank cards were stolen from the car. Reminder: Never use a car as a safe, and do not store cash, laptops, and other valuables in the car and the trunk; when you get off, be sure to lock the doors and windows, open the electronic alarm, and park the car as far as possible. On-duty, managed parking. On the morning of December 21, 2014, a certain resident of Luanping County drove an electric car to a hospital in the county to visit the patient and parked the electric car on the side of the hospital building. After a while, a middle-aged man came quietly next to the electric car and used it as a tool to unlock the power switch of the electric car and then fled. Reminder: Internet cafes, supermarkets, food markets, shopping malls, etc. Land is a high-risk area for electric vehicle thefts. It must be parked in a car park that is under care and locked in time. It is a gray-black metal with metallic luster (body-centered cubic crystal). Melting point 3400 ℃. Boiling point 5555℃. The hardness of tungsten is the hardest among metals. The hardness of the sintered Tungsten Rod is 200~250, and the tungsten rod passed through the rotary hammer is 350~400. Soluble in mixed acid of nitric acid and hydrofluoric acid. Melt with a mixture of sodium hydroxide and sodium carbonate. Slightly soluble in nitric acid, sulfuric acid, aqua regia; insoluble in water, hydrofluoric acid, potassium hydroxide. Tungsten is available in two variants, a and B. At standard temperature and atmospheric pressure, type a is a stable body-centered cubic structure. Type B tungsten can only appear in the presence of oxygen. It is stable below 630 °C, and is converted into a-tungsten above 630 °C, and this process is irreversible. Tungsten is mostly used in the production of cemented carbide and ferrotungsten. Tungsten and chromium, molybdenum and cobalt form heat-resistant and wear-resistant alloys for making tools, metal surface hardening materials, gas turbine blades and combustion tubes, etc. Tungsten and tantalum, niobium, molybdenum, etc. form refractory alloys. Tungsten copper and tungsten silver alloys are used as electrical contact materials. High-density tungsten-nickel-copper alloy is used as a radiation shield. Metal tungsten wires, rods, sheets, etc. are used to make parts of light bulbs, electronic tubes and electrodes for arc welding. Tungsten powder can be sintered into filters of various porosity. FW-1 is used as raw material for large slab and tungsten-rhenium galvanic couple. FW-2 is used for contact alloy, high specific gravity shielding material. FWP-1 is used for plasma sprayed materials. Tungsten Powder,Low Carbon Tungsten Powder,Iron Alloy Tungsten Powder,Cast Tungsten Powder Jiangsu Lucky Metal Materials Co., Ltd. , https://www.luckymetalmoly.com
Tungsten powder is the main raw material for processing powder metallurgy tungsten products and tungsten alloys. Pure tungsten powder can be made into wire, rod, tube, plate and other processed materials and certain shaped products. Tungsten powder mixed with other metal powders can be made into various tungsten alloys, such as tungsten-molybdenum alloy, tungsten-rhenium alloy, tungsten-copper alloy and high-density tungsten alloy. Another important application of tungsten powder is to make tungsten carbide powder, and then prepare cemented carbide tools, such as turning tools, milling cutters, drills and molds.
At the end of the year, there were frequent cases of all kinds of thefts. The reporter selected several types of typical cases from the theft cases recently uncovered by the public security authorities to discuss the prevention methods for such cases one by one.