Article List
- The hardness of the hard seal ball valve we should be how to controlToday, small make up for you to sum up about how to control the hardness of the ball valve related to the hardness of the relevant knowledge, and small make up to look at it!1.In the ordinary hard seal ball valve only opening and closing two locations, hard seal ball valve a general in the control accuracy requirements and parameters required for the smooth selection; seal ball valve z3cf three normally open type, with three flow micro Kai, wide open and closed; ZDF Z1/1 combination work hard seal ball valve is open, open, open, open four flow.2.The action time: refers to the main valve is signals successfully switched on or cut off the completion time, there are some multifunctional hard seal ball valve can open and close time were adjusted to, not only the control accuracy can meet the requirements, prevent water hammer damage.3.The leakage amount of the sample is given the value of the common economic level, if too high, please make a special order.Used to achieve the pipeline systeIndustry News July 18, 2016
- Stainless steel processing and welding attention to three pointsMechanical parts and steel structure parts than in welding has certain difficulties, because the strength, rigidity requirements of welding parts to be guaranteed, but also the overall size, shape and position accuracy and repair after the processing requirements should also be guaranteed. Repair large and complex parts, to see parts of the wear and tear of the process to develop welding repair process, and strictly implement.General situation, stainless steel processing welding repair process should pay attention to the following three points:1) Preparation before welding. In addition to the main equipment, preparation and welding preheating welding groove.2) Positioning welding: in the local has been broken off the overall welding repair, should ensure that the docking position is accurate, in case of excessive deformation in the welding. For this purpose, we should first make the position welding: the welding rod with the diameter less than the welding, and then the position is corrIndustry News July 18, 2016
- Analysis of failure factors of die in the production of stamping dieThe most prone to the stamping die production problem is the mold failure, often caused by production, product production cycle is greatly affected. Mold cracking, breaking, up and so on are all belong to the mold damage, mold damage problems in processing, mold design, manufacturing process and the use of mold to find reasons. Therefore, the cause of the mold failure in the shortest time to find, reasonable maintenance.At first, whether the material is suitable is to be examined, whether a reasonable heat treatment process is carried out. Usually have a great impact on the heat treatment process of die materials. If the quenching of the mold to produce high temperature, method and time to master unreasonable, as well as the tempering frequency, temperature, the choice of the elbow is not appropriate, will lead to damage to the mold after entering the stamping production. Design not reasonable good blanking hole size or depth, easy to make the slot blocking, causing damage to the blankIndustry News July 20, 2016
- Analysis on the daily maintenance of dry magnetic separatorPermanent magnet dry magnetic separator due to its own requirements and strength of the work, so it is particularly important to maintain daily maintenance, more important is the replacement of the maintenance of the oil.Attention should be paid to the use of the process:1.Permanent magnetic cylinder wall wear, if you find that the plaster off after serious wear and tear, do not delay to deal with re - hung immediately.2.There is no iron and other debris into the box body, such as debris should be immediately removed.3.Motor, and stepless transmission device and a permanent magnetic cylinder bearing overheating, bearing temperature generally not exceeds 35 degrees Celsius, the maximum limit is 55 degrees Celsius.4.Whether the transmission belt tension to a certain extent.5.Belt wear, found that there is serious wear and tear, belt replacement to choose the same as the replacement.6.Enough lubricating grease are placed on the all lubricating points, no speed oil level is normal, such asIndustry News July 20, 2016
- Precision die casting technology and its advantagesThe molten alloy liquid is poured into a pressure chamber, which is a precision die casting, and the steel mould is filled with high speed, and the alloy liquid is solidified under pressure to form a kind of precision casting method. Precision casting has the following advantages.1.Product quality is goodSize precision high on the casting, generally can be reached 6 to 7, even up to 4; good surface smoothness, generally reach 5 to 8; high strength and hardness, strength increase 25-30% relative sand casting, but decreased the elongation of 70%; dimensional stability, good interchangeability, complicated and thin-wall castings can be die-casting.2.High production efficiencyMachine with high productivity, such as domestic J III 3 type horizontal cold empty die casting machine average eight hours can die-casting 600 ~ 700 times, small hot chamber die casting machine average every eight hours can die casting 3000~7000; long service life of the die casting die, a pair of die casting, the clIndustry News July 19, 2016
- Several ways of forging waste heat treatment technologyThe so-called residual forging heat processing refers to the heat treatment deformation at high temperature is embryo of the workpiece material into a furnace heated to forging temperature and after heat preservation, austenite transformation occurred in the workpiece blank, then generates deformation during the forging process, final forging after the end, pre cooling and isothermal temperature we need to according to the different material, and then select corresponding cooling method, we need the structure and mechanical properties.The following are some common methods of waste heat treatment:1. The residual forging heat quenching deformation occurred in the forging process, end forging, pre cooling and isothermal to our desired temperature cooling mode by water or oil rapid cooling according to the requirements of different materials, quenching martensite organization this to get is quenching.2. Forging heat quenching and tempering: in heating furnace into the need of processing blIndustry News July 21, 2016
- Casting technology and method for cast iron platformCast iron plate, cast iron platform casting formation modeling is one of the key processes in the process of core making it on the casting quality, manufacturing cost, production efficiency, labor intensity and environmental pollution has very important influence. There are several kinds of cast iron plate casting method:Second, form the core making resin sand process: through the development of the bond economy, catalyst, or rarely contain pollution, and supporting environmental treatment equipment also studied at the same time, resin self hardening sand, cold core box from the hard process, warm box method and shell type (core) resin method are widely applied to process modeling of product of cast iron plate, cast iron platform, cast iron square box, plate bending, machine tool bed casting.Third, modelling core technology for water glass sand: improve the bonding performance through research on water glass purification and modification, water glass sand and used sand reclamation withIndustry News July 25, 2016
- Pneumatic ball valve and worm wheel rotary valve has any advantageBall valve with pneumatic actuator is pneumatic ball valve, because the execution speed is relatively fast, 0.05 seconds / time is the fastest speed can reach, so the gas moving fast shut-off valve is pneumatic ball valve's nickname, usually equipped with various accessories in the gas valve use, such as solenoid valves, air FRL limit switch, positioners, control box, can make local control and remote centralized control is easy to implement, the switch of the valve in the control room can control directly, do not need to run to the scene or at high altitudes and the danger zone to manual control, so that the human resources and time and safety of also has the greatly improved.The pneumatic ball valve is evolved from the plug valve. Both have the same rotation of 90 degrees, the difference is that the body of the plug valve presents a ball shape, a circular through hole or channel through its axis. The ratio of the spherical surface and the channel port should be such that when the balIndustry News July 25, 2016
- Magnetic separator installation notesUsers according to their own needs of the field and function of the product, choose suitable for their use of the magnetic separator, the next small series for you to introduce magnetic separation table is a strong magnetic separation machine installation attention points.When the magnetic separator for ore selection and the force of magnetic field in the stronger magnetic minerals more, effective separation in the separator or poly magnetic medium adsorbed magnetic minerals, no magnetic material will only by other forces and not receive a magnetic adsorption, with mineral has a different trajectory, so as to realize the separation of magnetic minerals and magnetic minerals.Industry News July 11, 2016
- When using the magnetic separator, we need to pay attention to several aspectsIn we use magnetic separator when we need to pay attention to is not only our magnetic separator, magnetic separator for materials and the scope of work is we should pay attention to the, for material was elevated landing when we can divided into three states. Here follow Xiaobian to understand the magnetic grinding machine for grinding media operation.Industry News July 11, 2016