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(D) Adhesion method Cold glue cold glue is a solution type or emulsion (gel) type. Most of the solution type is water-soluble, with starch-based and protein-based, such as dextrin, casein, bone glue and so on. The most widely used adhesive products are paper products, which have the advantages of no heating, energy saving, good heat resistance, and low price. Disadvantages are long curing time, easy to mold, and can not meet the requirements of high-speed packaging machines and sanitary...
Color-coded elements are divided into objective color-coded elements (measured by densitometers or other devices) and subjective color-coded elements (estimated by the human eye), but not all color codes contain all of these elements. The general color scale contains the following contents. The objective element 10% hue/high light and high light refers to halftone dots with halftone dots between 1% and 20%. They are some color patches with uniform density, and are printed with four colors of...
There are many types of trace element fertilizers, which can be distinguished by element or by type of compound. According to the elements, there are molybdenum fertilizer, boron fertilizer, manganese fertilizer, zinc fertilizer, copper fertilizer and iron fertilizer. Boron and molybdenum are often anions, ie, borate or molybdate; other elements are cations, and sulfates (eg, zinc sulfate, manganese sulfate, etc.) are commonly used. 1 Boron fertilizer: borax, boric acid, boron mud (boron slag),...
Waterproof plugging, as its name suggests, is the construction of indoor and outdoor water-repellent treatment of buildings and the leakage of leaks inside and outside the room. Broadly speaking, this is a treatment for the treatment of space objects such as water repellent treatment and fluid and liquid trapping. Waterproof trapping project has a very important position in our lives and is closely related to our life. Next, Xiaobian introduced waterproof trapping procedures and waterproof...
Fuhe Sealing Factory in Qinghe County, Hebei Province was founded in 1989 and is located in Matun Industrial Zone, Qinghe County. Specializing in the production of various building doors and windows sealed strips, automotive seals, air conditioning seals, furniture seals, electrical seals, foam seals, mechanical seals, automotive windshields, door strips, decorative strips, skeleton strips, Extruded sealing strips, E-type, P-type, D-type sealing strips, rubber sealing strips, three composite...
Balcony Notes: 1. The tile on the balcony is not attached, and it is necessary to communicate with the decoration master when measuring the size. The installation must be installed according to the exact size. 2. Safe construction is a top priority 3. After the balcony is fixed in the window frame, install the window sash. Generally use the sliding window to close the balcony. The requirements are close and tight, the gap is even, the splicing between the fan and the frame is tight, the push...
Model NO.: HP-SM600Z Feature: Disposable, Bio-Degradable, Shock Resistance Material: Laminated Material Name: Dental Autoclave Sealing Machine Trademark: HEPOBIO Transport Package: Standard Packing Specification: CE ISO SNS Origin: Zhengzhou Newest Medical Sealing Machine (HP-SM600Z) Note: One year quality guarantee and 24 hours phone service!After-sale Service Policy 1)All our products are one year quality guarantee time generally.Longer guarantee can be refer to detailed offer. 2)We will...
In the production of oblate shell parts, industrial companies use the nonlinear finite element analysis provided by the FEMech Engineering Technology Association. The interlaminar shear stress acting between the lining structures is a particular focus. If these stresses are high, delamination can occur in the structural lining. Analysis shows that all stress levels are within the permissible range. Obviously, due to the low modulus of polypropylene, the interlaminar shear stress is also...
Rare earth metals (rare earth metals), also known as a rare earth element, is a general term for a group ⅢB periodic table scandium, yttrium, lanthanides 17 elements, commonly represented by R or RE. Their names and chemical symbols are 钪 (Sc), 钇 (Y), 镧 (La), 铈 (Ce), 镨 (Pr), 钕 (Nd), 钷 (Pm), 钐 (Sm), 铕 (Eu ), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu). Their atomic numbers are 21 (Sc), 39 (Y), 57 (La) to 71 (Lu). The term...
1. Molding Most rubber seals are applied by such molding methods, such as various extrusion seals, rotary shaft lip seals, reciprocating lip seals, composite seals, film seals, bellows seals, and the like. 2. Processing and forming such as rectangular seal, piston ring seal, coaxial seal (or slip ring combination seal). 3. Plate or strip type materials such as rubber, fiber reinforced rubber, bonded asbestos fiber, aramid fiber, etc., plate or strip type material is mostly used for sealing...
The sealing material can be formulated into a liquid or a paste during use, coated between the contact faces of the two parts, cured under certain conditions or sealed by a dry putty; or can be processed into solids of various shapes or The hollow ring is mounted to seal between the contact faces of the two components. The former means that the sealing material is only used for the static sealing part where the contact surface of the two parts has no relative movement; the latter is said that...
The aerospace industry also requires sealing materials to meet specific environmental requirements such as resistance to vacuum, radiation, pollution, non-toxicity, high and low temperatures, and resistance to media such as aviation fuels and rocket propellants. The sealing materials used in the aerospace industry mainly include: polysulfide rubber, silicone rubber and polyurethane sealants. Polysulfide rubber sealant has excellent aviation fuel resistance and is mainly used for sealing the...
Sealing materials should generally have good physical and mechanical properties, high resilience, small compression set, reliable sealing, convenient processing and long service life. Silicone rubber sealant can withstand high temperature and low temperature, radiation resistance, vacuum resistance, pollution-free, non-toxic; polysulfide rubber sealant has excellent resistance to aviation fuel, and is also resistant to high temperature, high pressure, friction and pressure. It is the leading...
The sealing performance of the valve refers to the ability of the sealing parts of the valve to prevent the leakage of the medium. It is the most important technical performance index of the valve. There are three sealing parts of the valve: the contact between the sealing surface of the opening and closing parts and the valve seat; the joint of the packing with the valve stem and the stuffing box; the connection between the valve body and the valve cover. The leak in the former place is called...
The electric control valve sealing surface processing quality for the rigid sealing pair, the method of ensuring the sealing is to adhere the two sealing surfaces to each other, so that the gap between the surfaces becomes a capillary-like narrow slit, and is not more than 0.02 mm. As the medium flows through the slit, as the time increases, a "polarized molecular layer" is formed on the wall of the slit with a thickness of 0.01 mm. When the width of the slit is less than 0.02 mm of...
The composite structure launch tube is a thin-walled structure made of composite laminate, composite reinforcement and metal flange. The material parameters are shown in Table 1. This finite element model fully simulates the actual structure. During the modeling process, The composite material shell is used to simulate the composite laminate, the composite body unit is used to simulate the launching tube rib, the body element is used to simulate all metal flanges, the flange and the composite...
Model NO.: OH300 Customized: Non-Customized Condition: New Warranty: 1 Year by Name: Oxy-Hydrogen Flame Sealing Machine Usage: Quartz Glass Melting, Ampoule Sealing Trademark: Okay Energy Transport Package: Standard Export Carton, 1 Carton/Set Specification: 300L/h hho gas Origin: Made in China Order Information:MOQ: 1 setProduction time: Within 1 weekPacking: Standard export carton, 1 set / cartonShipment: By sea, by air, by expressPayment: T/T, Western Union, Moneygram, Credit Card,...
Model NO.: OH300 Customized: Non-Customized Condition: New Warranty: 1 Year by Name: Oxy-Hydrogen Flame Sealing Machine Usage: Quartz Glass Melting, Ampoule Sealing Trademark: Okay Energy Transport Package: Standard Export Carton, 1 Carton/Set Specification: 300L/h gas output Origin: Made in China Order Information:MOQ: 1 setProduction time: Within 1 weekPacking: Standard export carton, 1 set / cartonShipment: By sea, by air, by expressPayment: T/T, Western Union, Moneygram, Credit Card,...
Model NO.: SIC heating element Specific Gravity: 2.6-2.8g/cm3 Diameter: 12mm Min Length: 3000mm Max Working Temperature: 1400c Max Usuage: Glass, Ceramic, Powder Metallurgy and Machinery Application: Heater, Cooler, Vaporizer, Condenser Principle: Sic Heating Element Structure Material: Sic Trademark: Zhengzhou Shibo Transport Package: Wooden Case with Foam Sponge Specification: SIC heating element Origin: Zhengzhou, Henan, China Specification1. Name: SiC heating element2. Type: ED, SC, SCR,...
Probe domestic double-head probe 038-BB-5.7L The shape of the two ends of the needle is outside the pointed needle Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM Hall element unequal potential compensation unequal potential has the same order of magnitude as Hall potential, and sometimes even exceeds Hall potential. ADUM1201ARZ is extremely difficult to eliminate unequal potential in practical applications, so compensation must be used. . Since the unequal...
One-piece inductor The following is a circuit diagram of [carrier catalytic element circuit] (Editor: Natural Beauty)
Elemental analyzer elementaryanalyzer An automated instrument for analyzing organic elements. Equipped with a microcomputer and a microprocessor for condition control and data processing, the method is simple and rapid. There are four methods for the determination of carbon, hydrogen and nitrogen analyzers: 1 differential thermal conductivity method. Also known as self-integration thermal conductivity method. The combustion part of the sample is analyzed by carbon, hydrogen and nitrogen for...
PTFE (polytetrafluoroethylene) composite material is a new type of composite material which is composed of two or more different properties or different phase materials containing PTFE, which are blended, copolymerized or combined to have better performance than the constituent materials. Through material compounding, it not only exerts the excellent characteristics of PTFE, but also overcomes the shortcomings of cold flow creep and non-wear resistance of PTFE, so that it has antifriction, wear...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.