Door from the material can be divided into five categories

Door from the material can be divided into five categories: steel , wood and steel structure , stainless steel, aluminum and Create exclusive own Taobao Pu Decoration shop website customer service work to optimize merchandising logistics delivery NK cash net  copper , in terms of quality and performance they have their own characteristics, naturally vary. Steel security door: can be said that up to appear on the market , people are the most used . Most people are familiar with the security door belonging to this series. Such doors cheaper and reasonable , its sales accounted for more than 90 % of the total market sales. The disadvantage of this is that the exterior lines of the door hard, difficult and modern interior integration . Steel doors : a can on a  accory high security bolt seals  interior doors , generally requested by the user , the use of anti-theft performance to reach the middle of the plate , the manufacturer can choose different colors according to user requirements , wood, lines and patterns , such as interior decoration integration, no longer as cold as the steel door uncoordinated . Therefore, it is also more expensive than steel security doors . Aluminum Door : This door is different from the accory tamper proof seal used in aluminum we see ordinary aluminum doors and windows , its high hardness and bright color, and then decorated with patterns modified , giving a sense of a magnificent , is a mid-range security door . Because this door will not fade , so it has some consumer groups. Stainless steel security door : Stainless steel security door , durable, higher security . Stainless steel security door currently on the market are too monotonous in color , basically silver-white , this color feel very stiff and difficult to coordinate and unify the door and the surrounding environment , but if the collision surface and weld marks, will be very obvious. Because stainless steel itself factors positioned higher. Brass Door : Most of the traditional copper theft security doors and entrance doors are combined , advanced style, but also in the fire, corrosion , tamper , dust aspects of a good performance. From the material sense, copper is the best anti-theft doors , from speaking, it is also the most expensive on the market can be seen basically about 5,000 yuan, the yuan can be expensive . It is mainly used in banks and other financial institutions , or
NK cash net WWW.BEIJINGJY.NET senior residential villas use .

The performance of the mechanical seal failure and the reasons

Mechanical seal failure in the operation of rotating equipment parts which, they would often wear the seal faces, thermal cracking, deformation, breakage, etc., will be the spring with a long relaxation, fracture and corrosion. Secondary seal cracks will appear, twisted and deformed, broken and so on.

Mechanical seal vibration, heat cause of the malfunction
During rotation of the device, causes the end face of the static ring bonded rough movement ring and seal chamber gap is too small, the runout caused by collision induced vibration. Sometimes, because of the seal faces resistance to corrosion and heat resistance poor or insufficient cooling or end during the installation folder particulate impurities can cause mechanical vibration and heat sealed.

Reasons for failure of the mechanical seal media leaks
(1) Static pressure leak test. Because of the mechanical seal is not careful when installing, tend to make the seal faces are bruised, deformation, damage, clean up without a net, there are the granular impurities, or due to loose screws, no compression gland, machinery, equipment, precision is not enough , so that the sealing surface is not completely fit, will cause media leaks. If it is missing sleeve bushing seal assembly is pressed or not enough compression or damage. (2) periodic or episodic leakage. plastic strap seal Mechanical seal rotor assembly periodic vibration, axial runout too, can cause leakage. Mechanical seal sealing surface pressure to have a certain ratio, so as to function as a sealing, mechanical seal which requires to have a certain amount of compression of the spring, a thrust force to the seal faces, so that the rotating sealing surface sealing up the required ratio pressure. To guarantee this one than the pressure required mechanical shaft seal can not have too much channeling amount, generally to ensure that within 0.25mm. However, in practical designs, the design is unreasonable, the shaft tends to produce a large amount of channeling, the use of mechanical seals are very unfavorable. (3) recurrent mechanical seal leakage. Frequent cause of mechanical seal leaks in many aspects. Firstly, since the seal faces recurring defects caused by the leak. The second aspect is secondary seal caused by recurring leaks. Third, the spring leakage defects. Other aspects include leakage rotor vibration caused by bad driving, and thrust tight or loose parts quality caused leaks, leaks caused by mechanical seal auxiliary organizations, the media due to problems caused by recurrent leakage. (4) mechanical seal vibration is too large.plastic strap seals Mechanical seal vibration is too large, resulting in loss of seal. But the mechanical seal is often the cause of vibration larger reason than just mechanical seal itself, other parts of the pump is also the root cause of vibration, such as shaft design is unreasonable, because of processing, lack of precision bearings, parallel coupling poor, radial force and other reasons

Doors and windows seal leakage is not necessarily a good question without

Window air leakage
>> One reason: poor material
Now the windows broken bridge insulation material to aluminum, steel windows for the mainstream, aluminum doors and windows have been sealed because of their poor performance will be phased out. But even purchased a plastic-steel windows and windows broken bridge, experts suggest that it should pay attention to materials.
"Whether the window air leakage great relationship with the material." Decoration industry Beijing Branch Director of Engineering Huzeng Guang said that if the material is poor, windows of deformation occurs two or three years, once deformed, the sealing performance poor, it leakage will occur, so it also reminds owners in the purchase of the windows to be extra careful material.
Solution: You can only find windows manufacturers to solve.
>> Two reasons: installed in place even if the material has excellent windows, the installation process is not in place to determine if the window is an important factor in air leakage. First, the windows must Yasumasa, otherwise use the window may appear after a period of time more and more crooked windows circumstances, the gap between the window frame and the wall also will be increasing, air leakage inevitable.
Secondly, the reporter has learned that the windows of the installation, you need to hit styrofoam filling the gap between the window frame and the wall. Styrofoam be cured, and then in the sash around evenly with sealant, both to prevent rainwater from the window and wall mounting gap penetrate indoors, but also to prevent air leakage. But also in the internal and external sided sizing windows, but Hu Zengguang introduction, some workers the easy way, just inside a plastic, or gluing several points inside, Mifengbuyan. Even outside playing styrofoam, but a year or year and a half or so will chalking, summer leaks, leakage situation occurs in winter. In addition, when the renovation, home improvement workers found Mifengbuyan sash with Qiangfeng gap will fill the putty from the inside, but a long time, there will be a remote seam, causing leakage.
Solution: In the first case have to find windows manufacturers. If only the windows inside the glue did not play well, the gap is relatively small, it can affix themselves Masking toward the gap in the Fixed Length plastic seal sealant can be marked; external glue if there is a problem you need to contact the workers to operate it.
>> Three reasons: not to force windows accessories Another important reason is that air leakage sealing fittings out of order. The most common is the seal aging crack, a direct result of poor performance window seals; there is a foam rubber is too soft, the use of powder occurs after a few years, resulting in the gap between the window frame and the wall becomes large, resulting in air leakage.
Solution: Can you change the bolt security seals, using EPDM rubber is better, or poorer quality rubber strips can; if they can not operate, to find street shop workers doing steel window replacement cost will not too much. As for the foam, need to find workers to operate, styrofoam cured, the landlord can tweak their look, struggling to pinching the quality is better.

Ceramics factory commonly used hydraulic seals

Hydraulics with small size, light weight, small inertia, smooth motion, can transmit large forces and other characteristics, but also has convenient control and easy to implement process automation, etc., so the hydraulics have been widely used in national defense and agricultural production sectors. Such as ceramics factory widely used hydraulic piston pumps, hydraulic presses and hydraulic carts machines.

Especially the reform and opening up 20 years, with hydraulic drive, electronic and digital control technology development, China's ceramic tiles manufacturers generally adopt the world's most advanced automatic hydraulic press production of ceramic tiles, in order to meet domestic and foreign markets. At the same time, China's household ceramics and sanitary ceramics industry has also been a vigorous development, such as household ceramics, dish type isostatic molding production technology and production equipment and low-voltage fast drainage, medium-pressure and high-pressure injection grouting pulp molding production of sanitary ceramics technology and promote the use of production equipment have made gratifying achievements. However, these hydraulic machinery hydraulic drives fatal weakness is the hydraulic oil leaks, it not only affects the hydraulic drive system performance and productivity, but also pollute the environment and waste production resources. Practical experience has shown that production, solve ceramics factory machinery hydraulics hydraulic hydraulic oil leak is the choice of the most effective ways to rail car seals sealing performance. Even though most ceramic manufacturers understand hydraulics particular hydraulic cylinder seals used some basic common sense, but its lack of systematic and comprehensive understanding, so in practice, production, hydraulic cylinder seals commonly used quality is often ignored by people , storage improper storage, assembly and disassembly savage, resulting in the cylinder cargo seals commonly aging, injury, or a greater plastic deformation, and even loss of the seal, resulting in leakage of hydraulic oil. So learn ceramics factory used hydraulic seal performance, material, structure, mechanism and influencing ceramics factory sealed hydraulic seals commonly used sealing performance factors, through the selection of suitable materials and appropriate structure in the form of hydraulic seals, and take appropriate protective measures can be used to maximize the ceramic factory hydraulic seal sealing performance and economic efficiency of enterprises.

Plastic seal applications and techniques

Plastic seal pier is a lot of applications, followed by hydro power company or a company used to do more, in our everyday lives is to be applied to, but not a lot, thus causing a lot of people do not use this plastic seals , is the plastic seals plastic seals. Today to explain the usefulness of plastic seals and techniques, many customers just know fodder seal or wrap is used to fix items.cable marker ties

But in fact there are some jagged plastic seals bendable plastic buckle to snap together, but plastic seals used in the wrong? In fact, many places you can use a plastic seal, the mall food and bundled items, there are many cars and underground wires inside the cable will be used inside the place where the plastic seal, like pants, like a belt, and now plastic seal are more durable and environmentally friendly, this form is the best there is a model which has pp steel can be produced according to customer's requirements into other colors, etc., so the majority of the customers can consult since, oh, quite part of the application and techniques just to find it a lot.stainless steel cable ties