Industry News
- The classification and characteristics of pneumatic ball valveAbout everyone knows how much the pneumatic ball valve, the following is to introduce the pneumatic ball valve.Pneumatic ball valve and ball valve has a O V type ball valve.O-type ball valve structure of floating type, ball core for precision casting, hard chromium plating processing, appearance with enhanced ptfe seat material, flow crossing the same as the pipe diameter, flow capacity, little flow resistance, closing without leakage, generally do switch valve is used, especially suitable for high viscosity, v-shaped ball valve fixed structure, ball core open v-shaped incision, which can realize shear fiber, granular media.Process equipment under different choice of pneumatic or electric actuators, forming an and electric ball valves, pneumatic ball valve such as pneumatic ball valve must be regulated to achieve proportional valve positioner, such as the electric ball valve to be regulated to achieve proportional election electronic actuators or servo amplifier, etc.From the material,Industry News September 18, 2016
- Large forgings forging drawing out the new processAs the steel needed for petroleum chemical industry, energy, the increase of weight, size, the weight of the ingot increases, prevent or reduce the inside of the steel ingot metallurgy defects become more difficult.On the other hand, due to the increase of ingot size weight, hydraulic press tonnage in relatively reduced, the quality of forgings standard is rising again.With the traditional upsetting technology, drawing out to break the inside of the steel ingot casting within the organization, repair metallurgical defects can not meet the requirements of the quality of forgings.Long pull, upsetting is the most widely used in large forgings forging two work steps, pull long compared with upsetting, as part of the small billet deformation, deformation, stress high defect area;So long pull is broken casting organization, repair the metallurgical defects main work step.Here is a new technology of large forgings forging drawing out: concave anvil drawing out the new process.Forging deformatIndustry News September 06, 2016
- Three methods of welding of stainless steel pipeStainless steel tube heat treatment abroad widely used continuous heat treatment furnace with protective gas without oxidation, the intermediate heat treatment in the process of production and the final finished heat treatment, because of lack of oxidation of the surface of the light can get, and cancel the traditional pickling process.The adoption of the heat treatment process is to improve the quality of the steel tube, and overcome the pickling pollution to the environment.According to the current trend of world development, basic light continuous furnace is divided into three types:(1) the roller bottom type bright heat treatment furnace.This type furnace is suitable for large size, large quantities of steel tube heat treatment, hour yield of 1.0 tons.Can use the protective gas for high purity hydrogen, ammonia and other protective gas.Can be equipped with convection cooling system, in order to rapidly cooling pipe.(2) the bright heat treatment furnace mesh belt type.This type furnIndustry News September 06, 2016
- Construction of the cast steel node common casting processIs widely used in modern construction, steel structure, such as gymnasium, factory building, exhibition hall, hotel buildings are more and more used in steel structure.Node is refers to the construction steel structure steel pipe in the intersection, its mechanical performance of the whole steel structure, engineering cost and ease of construction have important influence.Nodes of the casting process is also very important.Cast steel node than welding has many advantages, contrast, use a wider range.Production is difficult, the cast-steel joints, choosing the reasonable casting process is very important.Cast steel node common casting method is:1, the sand mold castingMainly used sodium silicate sand casting process, it can get high quality casting quality, non-toxic harmless, more suitable for the large-scale steel production, the cast-steel joints.But the process generally use wooden modelling, along with the node shape diversification, wooden modelling, core making more difficult, anIndustry News September 14, 2016
- Liner stainless steel compound steel pipe welding processLiner stainless steel compound steel pipe (304 + Q235B) is a new kind of composite pipe material, corrosion resistance, high temperature resistant, high extensibility, high strength etc., are widely used in the new construction and expansion of process pipeline of petrochemical plant.The pipe material the use of the biggest problem is that at the grass-roots level and composite layer of fusion welding problem completely.To get good welding effect, the correct welding method is:1, welding preparationBefore welding will contact layer of paint, clean up dirt and oxide layer, so as to avoid the welding process impurities heat will decompose into H2O and CO2.Even before welding to preheat at the grass-roots level and composite layer.Preheat the electrical heating method, with the center line of the counterpart as a benchmark, on both sides of the wall thickness is not less than three times, and not less than 50 mm, and prevent overheating.2, the welding processWelding compound layer first,Industry News September 14, 2016
- All welded ball valve in the application of the heating system advantageApplication of full welded ball valve in the heating system what are the benefits, you know?No leakage: the product USES the seamless steel tube forming technology, integrated automatic welding process.Central and valve sleeve joint no leakage phenomenon,Save the flange gasket, reduce the cost of installationZero leakage, 15 years of free maintenance, sealing ring using 25% of the carbon fiber PTFE25 % carbon fiber material and dished spring loaded valve seat structure design, adaptable to changes in temperature and pressure.When ball valve opening and closing times increase sealing surface wear or pipe pressure is not stable, seat free to compensate for the disc spring mechanism, ensure the close coordination of the sealing surface and sphere, ensures zero leakage.Can be buried, buried type welded ball valve can be directly buried underground, well don't have to build tall, just set the shallow Wells on the ground, according to the requirements of the pipeline design, can adjust the lIndustry News September 14, 2016
- All welded ball valve in the application of the heating system advantageApplication of full welded ball valve in the heating system what are the benefits, you know?No leakage: the product USES the seamless steel tube forming technology, integrated automatic welding process.Central and valve sleeve joint no leakage phenomenon,Save the flange gasket, reduce the cost of installationZero leakage, 15 years of free maintenance, sealing ring using 25% of the carbon fiber PTFE25 % carbon fiber material and dished spring loaded valve seat structure design, adaptable to changes in temperature and pressure.When ball valve opening and closing times increase sealing surface wear or pipe pressure is not stable, seat free to compensate for the disc spring mechanism, ensure the close coordination of the sealing surface and sphere, ensures zero leakage.Can be buried, buried type welded ball valve can be directly buried underground, well don't have to build tall, just set the shallow Wells on the ground, according to the requirements of the pipeline design, can adjust the lIndustry News September 14, 2016
- High magnetic separator you maintain so?Magnetic separator should be a lot of people can use, but how many people are there in the daily maintenance of machine will attach importance to it, let's take a look at what is the daily maintenance of magnetic separator.1, clean parts.Cleaning including filling pipe, groove box, and the body surface clean.When cleaning do not use sharp or magnetic objects, myself also don't carry the door CARDS, bank CARDS, mobile phone items, lest cause degaussing and other unnecessary loss.2, lubrication.Each bearing lubricating oil to add and replace, add a general use, replaced every three months, pay attention to the brand lubricants, don't mix.Finally, to deal with the problems and faults in the operation of last time, completes the registration and record.In daily routine check is static management, need do detail, like high magnetic separator a hundreds of thousands of, have the troubleshooting and maintenance will be a waste of time and money, delay the progress.More information on high-strIndustry News September 18, 2016
- Stainless steel pipe welding technology to meet the conditionsDue to the stainless steel pipe sizes, according to the welding of stainless steel pipe fittings unique place, as far as possible reduce the amount of heat input, the manual electric arc welding, argon arc welding is adopted two kinds of methods, d > Φ 159 mm adopts argon arc welding, manual arc welding surface.D ≦ Φ 159 mm all use argon arc welding.Stainless steel pipe welding technology to meet the conditions.(1) manual arc welding with welding machine adopts dc reverse connection, when using dc argon arc welding is pick up;(2), it should be before welding wire with oxide coating on the surface of the stainless steel wire brush to brush off, with acetone to wash;Electrode should be in 200-250 ℃ drying 1 h, as you take;(3) the workpiece before welding groove on both sides of the 25 mm within the scope of the clean up oil pollution and so on, with acetone to wash groove on both sides of the 25 mm;(4) argon arc welding, the nozzle Φ 2 mm in diameter, extremely rich tungsten tungsten eleIndustry News September 19, 2016
- The relief valve and working principle of the float valveBall valve is a kind of use a sphere as a closing of the valve, the valve body, valve seat, mainly for the sphere, the valve stem and handle (or other drive).Driven by the valve stem, and around the ball valve axis of rotation.Mainly used in the pipe used for cutting or distribution and the change of flow direction of medium.There are many different kinds of ball valves, including its action principle and medium and application fields of different, today small make up to introduce the relief valve and the working principle of the float valve.The working principle of the float valveAccused of floating ball valve is love by rotary valve to keep the valve open or occlusion.Ball valve switch lightweight, small size, can make it big caliber, reliable sealing and structure?Simple, easy maintenance, sealing surface and the spherical often in the closed state, not easily be medium erosion, has been widely used in various industries.Remote control float valve is love by rotary valve to keep theIndustry News September 19, 2016