How to select the straight-through single-seat quick-opening valve of the capacitor welding machine

06 Aug 2021

Caliber calculations are generally not required for straight-through single-seat quick-opening valves, but when it is close to the equipment behind the valve, in order to prevent the high-pressure medium from impacting the equipment when the valve is quickly opened, the caliber calculations must be performed on the straight-through single-seat quick-opening valves. Methods as below: Before choosing a straight-through single-seat quick-opening valve, you must understand the detailed process parameters and control requirements, and make a preliminary judgment based on the process parameters and control requirements whether you can use a straight-through single-seat quick-opening valve. If you can choose a straight-through single-seat quick-opening valve, then Perform detailed calculations of flow coefficient, noise and unbalanced force according to the process parameters, and finally select the detailed configuration of the valve according to the calculation results. The calculation and ...

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Precautions for the replacement of hot melt glue machine hoses

26 Jul 2021

First of all, it is necessary to confirm the brand of the hot melt glue machine to be connected, which country is from, the length of the hot melt hose, and the inner diameter of the hot melt hose, these basic data. Secondly, take pictures of the plugs at both ends of the hot melt hose to be replaced to the hot melt glue machine parts manufacturer to confirm whether it is the conventional hot melt hose connection method and the connection position of the pins, so as to avoid incorrect positions and receive After delivery, it cannot be plugged in and cannot be used. Then it is necessary to determine whether the hot melt hose is used for strip-shaped or spiral spraying. If it is a strip-shaped hot-melt hose, there is no need to add a Teflon air hose, while the spiral hot-melt hose is Be sure to add an extra tube. Here, the editor will give everyone a little knowledge. The spiral rubber ring is blown out by the air pressure in the trachea. So we must pay attention before this. As one of t...

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Thermal Fusion Butt Joint of Polyethylene Pipe

21 Jul 2021

The connection joints of all polyethylene pipes must use electric fusion or hot fusion connection methods, and must not use mechanical connection methods. The joints of hot fusion connection are stronger than the pipeline itself. The joints or connectors are made of plastic, so there is no corrosion problem. The selection of the pipe connection method depends on the requirements and recommendations of the pipe manufacturer, as well as the technology mastered by the on-site construction personnel. The hot-melt connection first trims, cleans, and aligns the pipes, and then heats them to their melting point and connects them together. In industry, we generally use hot-melt butt joints. The hot-melt butt joint is a method in which the end interfaces of polyethylene pipes are heated and melted by a heating plate and then joined together by cooling and fixing. Usually, a hot-melt electric welding machine is used to heat the end pipe, make it melt, and quickly attach it, maintain a certain pr...

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See how professionals operate the steel butt welding machine

13 Jul 2021

Here is an introduction to the operation steps of the professional staff of the steel bar butt welding machine Operation steps for professional staff of steel bar butt welding machine: 1. Operators must wear protective glasses and rubber gloves, and the station should be filled with insulating materials such as wooden boards or rubber plates. Rubber-soled shoes should be worn. Barefoot or slippers are not allowed. 2. The processing site should have a rainproof, moisture-proof, sun-proof, work shed that meets the requirements of fire prevention and safe electricity usage, and fire-fighting equipment. 3. The steel bar butt welding machine should be installed indoors, the wire insulation is good, there is no broken skin leakage phenomenon, and there is reliable protection for zero connection. When multiple butt welding machines are installed side by side, the distance between each other shall not be less than 3m, and they shall be connected to the power grids of different phases, and shal...

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The process steps of PE butt welding machine construction:

07 Jul 2021

The connection interface of the thermal fusion butt joint is flat. The method is to heat the two identical connection interfaces with a hot plate to a viscous fluid state, remove the hot plate, and then apply a certain pressure to the connection interface, and cool and solidify under this pressure state. Form a strong connection. The main process is adjustment, heating, switching, seam pressurization and cooling. When the interface is connected, the material in the viscous flow state flows and diffuses. Too much flow is not conducive to diffusion and entanglement. Therefore, the flow must be restricted to a certain range to achieve "post-melting welding" in the limited flow. Therefore, the key to the docking process is to adjust the three parameters of temperature, time, and pressure during the docking process. The performance, stress status, geometric shape and environmental conditions of the connection interface material must be considered together to achieve reliable welding. Tests ...

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Do you know the different types of plastic welding processes

30 Jun 2021

A plastic product may be made of multiple materials or components. To combine the components, mechanical fasteners, adhesives, and welding processes can be used. Among the three joining methods, the welding process has the best effect, and the welding forms are various, and different welding processes can be used according to different materials, sizes, and uses. To Mechanical fasteners, adhesives and welding processes can all join the two engineering plastics. Mechanical fasteners can quickly connect the two components, but the leak-proof function of the joint is poor, and local stress can also cause the polymer material to separate. Adhesives can provide good properties and form joints with excellent leak-proof function. However, adhesives are difficult to handle and slow to cure. At the same time, when the adhesive is used for bonding, the preparation of the seam and the cleanliness of the surface are required. Welding can produce a well-bonded seam with mechanical properties close ...

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