vacuum equipment

The development of heat treatment (1) cleaning and heat treatment The waste water, waste gas, waste salt, dust, noise and electromagnetic radiation produced by heat treatment will pollute the environment.  It is one of the developing directions of heat treatment technology in developed countries to solve the environmental pollution problem of heat treatment and implement clean heat treatment (or green heat treatment).  In order to reduce the emission of SO2, CO, CO2, dust and cinder, the use of coal as fuel has been basically eliminated, and the use of heavy oil has been decreasing. The majority of heavy oil has been converted to light oil, and natural gas is still the most ideal fuel. The waste heat utilization of the combustion furnace has reached a high degree, and the optimization of burner structure and strict control of air-fuel ratio ensure reasonable combustion, so as to reduce NOX and CO to the minimum. The use of gas carburizing, carbon and nitrogen co-carburizing and vacu

(1) the application scope of GCr15 steel is expanded. Generally, the effective wall thickness of GCr15 steel ring is less than 12mm when it is quenched. However, due to the strong cooling capacity of nitrate when BL is quenched, the effective wall thickness of the ring can be extended to about 28mm if measures such as stirring, crosslinking and adding water are adopted.  (2) stable hardness and good uniformity  The BL change is a slow process, generally GCr15 steel 4 h, GCr18Mo steel need 5 h, ring in long isothermal nitrate, on the surface of the core organization transformation almost simultaneously, so the hardness of stability, uniformity, good general BL GCr15 steel after quenching hardness in 59 ~ 61 HRC, uniformity of 1 or less HRC, unlike quenching ring wall thickness slightly bigger when there is low hardness, soft point, poor uniformity.  (3) reduce quenching and grinding cracks  In the bearing production of railway and rolling mill, due to the large size and weight

The vacuum system of a vacuum heat treatment furnace The vacuum system of the vacuum heat treatment furnace is generally composed of vacuum pump, vacuum valve, vacuum measuring instrument, cold trap, pipe and other parts.  Several common vacuum systems are described below: High temperature heat treatment furnace refers to the equipment used for heat treatment process, including box type high temperature furnace, vacuum tube type furnace, box type atmosphere furnace, high temperature vacuum furnace, zirconia sintering furnace, denture crystallization furnace and other special dental sintering furnace. In the heat treatment workshop, there are also fuel, power, water, gas and other power supply equipment needed for heat treatment production, as well as lifting transportation equipment, production safety and environmental protection equipment. We usually refer to the equipment that completes the heat treatment process as the main equipment. The equipment necessary to support and m

I. vacuum brazing preparation 1)  vacuum brazing furnace boiler stop more than 24 hours, before the vacuum brazing required in no less than 450 + 20 ℃ temperature bake for an hour (or 700 + 50 ℃ heat preservation 60 minutes). 2) the preheating of diffusion pump shall not be less than 1 hour before the opening of vacuum brazing furnace, and shall not be less than 70 minutes in winter; 3) the dosage of magnesium powder should be 15g/m3. 4) according to the operating rules of aluminum vacuum brazing, make the debugging of all the systems, keep the water, electricity, gas and other instruments display normal, and the data are consistent. Ii. Supporting data 1) open the water cooling system of the cut-off valve, keep the water pressure in 0.2 ~ 0.3 MPa, keep clear of drainage, working in the furnace during import water temperature is not lower than 25 ℃, the temperature is not higher than 30 ℃. 2) when the vacuum brazing furnace is stopped at ordinary times, the furnace need

Vacuum smelting equipment  is under the condition of vacuum, the easy oxidation of various metals, precision alloy, rare earth alloy, active metal, each department hydrogen storage alloy, soft magnetic alloy, high temperature alloy and brazing alloy smelting of metal melting equipment. The equipment operates by vacuuming and then warming up. Under the condition of vacuum, the effect of high temperature smelting can be achieved while the oxidation of oxygen in metal and air can be avoided. In addition, the equipment can be used for temperature measurement, sampling, tamping, feeding and alloy composition adjustment without damaging vacuum during smelting. The temperature and time of heating and cooling can be set by the intelligent touch screen to meet the requirements of different processes. In addition, the heating temperature than the general environment under vacuum equipment to energy-saving principle (thermal radiation), the temperature climbed time is short, it is greatly imp

South red is need disc play, this topic is not controversial, because it more after playing it will have wrapped slurry, and the more playing its luster of jade came out, the luster is not like first bought that kind of polishing, especially south red, how polishing also not so bright, but often its luster after playing and people are warm, the feeling of bling that came out. Have played the friend of south red say: "a good south red, look very comfortable, downy, give a person with moist feeling." This phrase expresses the feeling of the players after they wear it or play it for a long time. Worthy of collection of south red, transparent structure between micro transparent, fat in my hand can feel powerful feeling, give a person the visual perception is also full of sheen, the quality of a material with close coupled with solid structure, overall very good feeling to the person. This time wearing a string of southern red agate bracelet, can improve cold hands a

A handstove is a long censer in the hand of a traveler for the Buddha. In the FaYuan ZhuLin, recorded between huang chiung caleb said Ye Fo incense burner: "before a little cloud: 16 t white elephant, don't play in the beast head lotus China thought furnace, lions ceng ju, the top have round ChengJinHua Kowloon, jin tai bao son when in China, the Buddha is often of the furnace, the concept of the present system of hand warmer, a small imitation method." A copper incense burner was unearthed in the 2nd tang tomb of chifeng mountain, changsha, hunan province. The base was covered with lotus, with small pillars and xiangdutong, and a gilt beast on its hilt. The incense burner was full of embers for the Buddha's use. There is also a piece of copper aromatherapy, spherical furnace body, furnace cover in the shape of a cone, the base of the bell shape. It was mutilated when unearthed. The same style of hand cookers also appeared in various tang tombs, which in

Incense burner, which is a kind of ancient ding furnace type, the old temple incense burner in most of the copper, iron, cast some smaller censer shape is made of jade, stone, pottery, porcelain, wood, such as copper, in a few cases, practical, ornamental two undesirable. Incense burner with cover, can be built in the spices, after lighting, incense smoke from the hole in the lid curl up to ascend and diffuse, when gathering and dispersing, giving people unlimited imagination. This large lacquer incense burner in the Ming dynasty is 157cm high and 60cm in diameter. It consists of three parts: bottom foot with mud support, abdomen furnace body and head dragon horse furnace cover. The whole shape imitates the bronze tripod of shang zhou, the furnace body imitates the tripod, and the furnace foot imitates the quadrupedal tripod, which combines the softness of the round tripod with the strength of the square tripod. The dragon horse on the cover of the furnace is the head hors