First, the back side of a large pad such as a MOSFET can be punched The first case is that a via is required on the pad, for example: In order to improve the heat dissipation of the MOSFET, we make a via on the MOSFET pad. Note: When handling the vias of large pads here, we need to evenly distribute the holes to ensure that the pads are evenly heated. Second, some small package resistors and capacitors, do not hit the vias on the pads Generally, the resistors and capacitors of the label are...
Dongjie anti-static needle felt dust removal filter bag process description Dongjie anti-static needle felt dust filter bag process description Anti-static needle felt dust filter bag is added to the filter bag material based on ordinary polyester needle felt Anti-static wire to prevent static electricity from occurring; this product is suitable for dust removal and filtration of explosive industrial dust. It is especially suitable for blast furnace gas, coal dust collection and coal mill dust...
A band-pass filter is a device that allows waves of a specific frequency band to pass while shielding other frequency bands. For example, the RLC oscillator circuit is an analog bandpass filter. A bandpass filter is a filter that can pass a frequency component in a certain frequency range but attenuate other ranges of frequency components to an extremely low level, as opposed to the concept of a bandstop filter. An example of an analog bandpass filter is a resistor-inductor-capacitor circuit...
A syringe is a common medical device used primarily for injecting liquids or pumping fluids. Syringes are often used in medicine. The specifications of the needles are generally divided into normal wall, thin wall and ultra-thin wall. The rigidity and sharpness directly affect the patient's pain. The state manufactures stainless steel for medical machinery in GB/T18457-2015. The needle tube standard specifies the rigidity of the needle of the medical syringe, and the production unit must...
Sanquan Zhongshi Medical Co., Ltd. fully implements the needle needle rigid tester GXY-02 which is developed and manufactured in accordance with the GB18457-2015 standard. It is used for disposable injection needles for human intradermal, subcutaneous, muscle and vein and hard stainless steel needles for other medical devices. The determination of the deflection value is also called a medical injection needle (needle) rigidity tester, a medical injection needle (needle) rigidity tester, a...
Sanquan Zhongshi Medical Co., Ltd. fully implements the needle needle rigid tester GXY-02 which is developed and manufactured in accordance with the GB18457-2015 standard. It is used for disposable injection needles for human intradermal, subcutaneous, muscle and vein and hard stainless steel needles for other medical devices. The deflection value is measured, and the deflection measurement range is 0-5mm. It is also called the medical injection needle (needle) rigidity tester, the medical...
Medical needle tube (needle) toughness tester RXY-02 is developed and produced according to the relevant provisions of GB18457 "Stainless steel needle for medical devices" and GB15811 "Single-use sterile injection needle" for Jinan Sanquan Zhongshi. It is specially used for human skin. The toughness of the needles for subcutaneous, intramuscular, and intravenous injections and hard and straight stainless steel needles for other medical devices, also known as the syringe...
Jinan Sanquan Zhongshi fully implements the standard of stainless steel injection needle for YBB00092004-2015 pre-filled syringe, developed and produced pre-filled needle rigidity tester GXY-02, stainless steel injection needle for pre-filled syringe for standard requirements of medicine packaging materials Rigidity test, also known as medical needle rigid tester, medical syringe tester, etc. Pre-filled injection needle rigidity tester YBB00092004-2015 Experimental principle: A prescribed force...
Jinan Sanquan Zhongshi implements GB/T 18457-2015 manufacturing medical machinery stainless steel needle tube, ISO9626-1991, GB/T 15811-2016 single-use sterile injection needle and other standards related regulations, research and development of medical needle needle toughness tester RXY -02, for the determination of the toughness of needles for the skin, subcutaneous, muscle and vein of human body and hard stainless steel needles for other medical devices. The test instrument can be used for...
Medical injection needle (needle) rigidity tester GXY-02 is designed and manufactured according to the relevant provisions of GB18457-2015 and "Manufacture of stainless steel needles for medical devices". It is specially used to test the rigidity of medical injection needles (tubes). It is also called a medical needle needle rigidity tester, an injection needle (needle) rigidity test machine, and the like. Medical injection needle (needle) rigidity tester detection instrument Sanquan...
The puncture force test device is used to evaluate the puncture force of the injection needle by the needle at a predetermined speed and perpendicularly through the maximum peak force measured when the skin is simulated, and is also called a polyurethane film or a polyurethane film for the needle tip force test. Simulated skin material: Material: Polyurethane film Thickness: 0.5mm ±0.05mm Hardness: Shore A (85 ± 10) Exposure area: (after reinforcement) equal to Φ10mm The needle-punching force...
What is the problem with the filter cloth filter of the belt filter press? What is the blockage of the filter press of the belt filter press? The quality of the belt filter press depends mainly on the quality of the filter cloth. The quality of the filter cloth directly affects the dewatering effect. Therefore, the quality of the filter cloth must be considered when purchasing the belt filter press. The service life is determined by many factors such as the type of filter, performance,...
With the development of the torrent of time, more and more enterprises are taking off some relatively backward production methods. This includes the way of traditional computer sewing operations. Many manufacturers have used computer sewing machines as machines for producing textiles. What can you do to maintain a computer needle car? Computer needle car requirements for operators What can you do to maintain a computer needle car? With the development of the torrent of time, more and more...
The user-friendly design of the needle filter makes the operator handy The needle filter is a fast, convenient and reliable filtering tool commonly used in the laboratory . It is beautiful and light in appearance and high in cleanliness. Because it does not need to change the membrane and clean the filter, it is a method for filtering HPLC and GC small samples. Syringe is used together. The filtration diameter is 4 mm to 50 mm, and the treatment amount is from 0.5 ml to 200 ml. The needle...
Needle-type printer breaks are often seen, and it is also a common fault of this kind of machine. A small needle needs dozens of times. Many users feel that it is not worth it. The cost of the needle is not high, mainly the manual change of needle. The fee is relatively high. If the needle printer only breaks one needle, the price per unit price will be much higher. Many users are on-site service, so the manual fee plus the door fee are on a small needle. If your needle printer has a broken...
Filter cloth characteristics filter press factory professional manufacturer service telephone 13760177211 Wu Sheng Today we will briefly introduce the characteristics of the filter cloth. Selection of filtration accuracy: First, the higher the filtration accuracy, the higher the requirements on the filter cloth. Second, first select the pH of the filter cloth environment: Whether the filtering environment is acidic or alkaline, then the raw material of the filter cloth can be selected, the...
Automatic filter press XMJ500, 630 filter press: This product is exquisite in material design, reasonable in design, versatile and beautiful in appearance. Manual jack transmission. The filter plate is molded by reinforced polypropylene material, with stable chemical properties, fast filtration speed, and resistance to acid, alkali and salt. The equipment is simple and labor-saving in operation, and has high work efficiency. It is widely used in the fields of chemical industry, light industry,...
Winter is here, and it is obviously a good choice to weave a scarf for yourself or a loved one. If you want to use a weave of a twisted scarf to create a scarf, you must first learn the weaving of the twist needle scarf. Speaking of this weave is not too complicated, the following small series will explain this weave in detail. Specifically, the weave of the twist needle scarf can be divided into five steps. The first step: determine the number of stitches The first line first determines the...
Nowadays, there is at least one stapler in every office, which provides us with the ideal means of binding many sheets of paper together for storage. I believe many students also have staplers in their homes. What are the stapler needle models? The uniform staple needle is (width * height): pointed, 11.5 * 6, mm, is the most common stapler used. Others: There are: 8.4*5, mm long legs: 11.5*10, mm can measure the size of the stapler and buy a suitable needle shape. The model examples are as...
Shanghai Haozhuang Instrument Co., Ltd. develops the LNB brand nitrogen blower, which is energy-saving and environmentally friendly, leading the country. Professional manufacturing is more secure and affordable Working principle The nitrogen blower completes the rapid concentration of samples by blowing nitrogen quickly, controllably, and continuously onto the surface of the heated liquid sample. It is suitable for concentrating a large number of samples. After the nitrogen blower is installed,...
The needle valve is a kind of adjustable valve, which has a wide range of uses, such as the cutting distance for flame cutting, and the knob for adjusting the flame temperature is the needle valve. The instrument needle valve is an important part of the instrument measuring pipeline system. It mainly includes a globe valve and a ball valve, and its function is to open or cut the pipeline path. The spool of a needle valve is a very pointed cone, inserted into the valve seat like a needle, hence...
The needle is not out of the marking head or the needle is out of normal: (1) Check whether the pressure of the pressure reducing valve is normal (the normal value is 2-4 atmospheres); ⑵ Check whether the air circuit is connected well, whether there is air leakage at the connection of the needle sleeve, and whether the trachea connector is inserted well; (3) Use manual test to see if the vibration of the steel needle is working and whether the air vibration of the needle valve is normal; ⑷Check...
Needle-punched non-woven fabric: It is a kind of dry-laid non-woven fabric. Needle-punched non-woven fabric uses the puncture effect of the needle to strengthen the fluffy web into a cloth. Needle-punched non-woven fabrics are made of polyester and polypropylene materials, and are carded, combed, pre-acupuncture and main acupuncture. The center is sandwiched with a mesh cloth, and then double-passed. The air-laid net is needle-punched to form a cloth. The post-press filter cloth has a...
Needle-punched non-woven fabric: It is a kind of dry-laid non-woven fabric. Needle-punched non-woven fabric uses the puncture effect of the needle to strengthen the fluffy web into a cloth. Needle-punched non-woven fabrics are made of polyester and polypropylene materials, and are carded, combed, pre-acupuncture and main acupuncture. The center is sandwiched with a mesh cloth, and then double-passed. The air-laid net is needle-punched to form a cloth. The post-press filter cloth has a...
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