廠房通風-通風系統的主要設備

　　1。通風管道　　通風設備其作用是輸送氣體。根據制作所用的材料不同可分爲風管和風道兩種。

　　常用的通風管道的斷面有圓形和矩形兩種。同樣截面積的風道，以圓形截面最節省材料，而且廠房通風其流動阻力小，因此采用圓形風道的較多。

　　2。室內送、排風口

　　室內送風口的作用是將管道輸送來的空氣以適當的速度、數量和角度送到工作地區的裝置。室內排風口的作用是將汙染空氣以一定的速度排出。常用的送、排風口有以下幾種：

　　（1）百葉風口

　　一般單層風口作爲送、排風口。雙層百葉風口具有調節功能，在需要調大型排風扇節氣流速度和氣流角度時用。

　　（2）空氣分布器

　　在大型建築物內如運動場館等常采用空氣分布器作爲送風口。常用的空氣分布器有矩形風口和旋轉吹風口等兩種。前一種適用于風速不大，要求空氣分布均勻的部位。後一種的風口可以繞軸線任意旋轉，氣流的出口方向可用風口的導向葉片進行調節。這種空氣分布器適用于不固定的局部送風系統。
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碳纖維-超細玻璃纖維隔板的結構和特性分析

超細玻璃纖維隔板的結構和特性：碳纖維
隔板是蓄電池的重要組成電木板。不屬于活性物質。在某些情況下甚至于起著決定性的作用。今天我們一起看看超細玻璃纖維隔板的結構和特性。

此種隔板由不含任何有機粘結劑的直徑爲0。5~4um 的超細玻璃纖維所組成。經抄紙法制成非壓縮FR4,FRP紙。 其結構爲多層氈狀。 由無序排列的玻璃纖維形成相對小而高曲徑的自由通道。該隔板在許多方面具備了明顯優于普通電池隔板的性能。總的來說。它具有以下主要特性: I、吸液量高。吸液速度快。親水性好。吸收並保持著電池額定容量所需的電解液。並FR4,FRP在整個壽命期間保持其高的吸液率； II、表面積大。孔隙率高。只要電液貧乏就可以保證正極生成的氧氣通過隔板擴散到負極。 與負極上的海綿鉛結合； III、孔徑小。可壓克力以有效地防止電池短路和枝晶穿透； IV、化學純度高。有害雜質少； V、電阻率低； VI、有非常好的耐酸性和抗氧化性。
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玻璃鑽孔-影響光學玻璃質量好壞的重要因素

　　　　成型和顯色是有色光學玻璃玻璃研磨生産過程中重要的工序之一，成型方法和顯色的技術水平高低是決定成品率高低和質最好壞的重要因素之一。
　　
　　一．玻璃的成型 用坩埚熔煉的有色光學玻璃，成型都采用澆注法。澆注法又可分爲大粘度澆注和稀粘度澆注。
　　
　　黑色透紫玻璃ZWB1，ZWB3成型采用稀粘度澆注，其他品種采用大粘度澆注。
　　
　　二、玻璃的退火 無色光學玻璃制造的光學零件要有高度的光學均勻性，必須進行精密退火。有色光學玻璃的光學均勻性要求沒有無色光學玻璃的商。它的退火要求主要是消除在成型中産生的永久應力，采用慢速退火即可。退火溫度、退火溫度範圍內保持的時問、降溫速度應根據不同品種和玻璃毛壞的尺寸，通過實驗方法制訂。對于有特殊光學均勻性要求的有色光學玻璃也需進行精密邀火。
　　
　　有些著色劑(例Mrl玻璃加工，Se等)的著色狀態存退火階段中還會發生變化，對含這類著色劑的玻璃，退火溫度的確定不但要考慮應力的消除，也要考慮著色狀態的變化。
　　
　　三、玻璃的顯色 所謂顯色，是指退火檢驗後的玻璃再重新加熱到一定溫度(妊色溫度)在此溫度下保持一定時間(顯色時問)，使玻璃中的著色化合物呈現一定的光潛特性。需要一次顯色的玻璃有黃色、橙色，紅色和近紅外截玻璃鑽孔止型玻璃。
　　
　　顯色溫度和顯色時問通過實驗確定。從退火後的大塊玻璃中，取若幹小塊試樣，在不同混度和不同時問下熱處理。冷卻後，研磨、抛光、涮定光譜特性、選定合適的溫度和時間．不同爐號玻璃，由于熔煉．成型、退火時的熱曆史不完全相同，每個爐號玻璃的顯色溫度和時間都要通過實驗確定。
　　
　　顯色玻璃的CNC玻璃光譜特性受顯色溫度影響較大，爲使大塊玻璃的顔色達到均勻，顯色應在精密退火爐內進行。精密退火爐的要求與無色光學玻璃退火用的精密退火爐相同。
　　
　　對于顯色溫度較高的近紅外截止型玻璃，顯色時玻璃已接近軟化，顯色時放置玻璃過程中要用石棉紙把玻璃隔開．顯色玻璃的條紋、氣泡等質量檢驗應在顯色前進行，因爲顯色後由于玻璃顔色深，難以檢驗。
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Rubber Seal-Silicone Rubber & its Uses

The silicones arRubber O-Ringe a group of elastomeric materials made from silicone， oxygen， hydrogen and carbon。 As a group， the silicones have poor tensile strength， tear resistance and abrasion resistance。 Special compounds have beer made which have exceptional heatCustom Mold Rubber Parts and compression set resistance。 Silicones possess excellent resistance to temperature extremes， Flexibility below - 175 degrees F (- 114 degrees C) has been demonstrated。 The maximum temperature at which silicones are recommended for continuous service in dry air is 450 degrees F (232 degrees C)。 Silicone rubber is generally non-reactive， stable， and resistant to extreme environments and temperatures from -55 °C to +300 °C while still maintaining its useful properties。 Due to these properties and its ease of manufacturing and shaping， silicone rubber can be found in a wide variety of products， including: automotive applications； cooking， baking， and foodRubber Seal storage products； apparel such as undergarments， sportswear， and footwear； electronics； media devices and implants； and in home repair and hardware with products such as silicone sealants。 Silicone´s retention of properties at these high temperatures is superior to other elastic materials， Silicone compounds are not normally recommended for dynamic sealing applications due to relatively low strength and high coefficient of friction。

During manufacture， heat may be required to vulcanize (set or cure) the silicone into its rubber-like form。 This is normally carried out in a two stage process at the point of manufacture into the desired shape， and then in a prolonged post-cure process。 It can also be injection molded。

An O-ring， also known as a packing， or a toric joint， is a mechanical qasket in the shape of a torus； it is a loop of elastomer with a disc-shaped cross-section， designed to be seated in a groove and compressed during assembly between two or more parts， creating a seal at the interface。 Material which is for Silicone O-Rings are: - Gold foil， Gasket material， viton， PTFE and Silicone Sheet Material。 The O-Rings are available in 4 sizes: - size 0， size 1， size 2， size 3 with correspond to the diameter of the cross section of the O-Ring。 With in these groups the O-Rings are classified according to their insider diameter。 In addition O-Ring kits of the most popular sizes of O-rings are available in both Buna & Viton。

Silicone rubber keypads (also known as Elastomeric Keypads) are used extensively in both consumer and industrial electronic products as a low cost and reliable switching solution。 Common applications of Silicone rubber keypads include remote controls for TV， Video and HIFI units， Electronic toys and games and industrial control equipment。 In recent years， the mobile phone handset manufacturers are the main consumer of Rubber Keypads world wide。 The material of Silicone Rubber Keypad is usually stiff in nature。 The surface of Keypads can vary from single button convex， to concave and even plane。 The Silicone Rubber Keypads are very much suitable for exact printRubber Gasket， graphic clarity and ideal thickness of the printing ink。

Silicon rubber sheet can be manufactured in a range of materialRubber Parts including Viton， Fluorosilicone rubber， Platinum， Cured Silicone Rubber， Metal dectactable and USP class VI approved。 Silicone Rubber Sheet can be supplied in rolls or pieces and used to stamp or waterjet cut Silicone rubber qaskets to custom designs。 Good resistant to weather ageing， ozone and chemicals。 Low permeability to gas， air and high dielectric strengths。 Available in Red/White & Transparent colour for Phamaceutical Industry。

Fanless pc-Fanless PCs - Making Computers More Efficient

We have recentlyIndustrial monitor seen a massive increase in interestpanel PC in noiseless computers， and different low-noise technology equipments。 Noiseless technology has become an integral part of our business over the few years。 No longer you have to deal with the irritating sound of the computers though they are used everywheredigital signage today。

As a number of PC´s seemingly make a big quantity of noise once theyFanless pc are turned on。 The fixed disk makes the case shudder， the processor and power fan perpetually produce a buzzing sound。 Several users are irritated by their constantly buzzing machines， and request solutions to make them noiseless。 Thus for the customer´s comfort， several new system units， information projectors and printers are engineered and made as fanless to ensure asunlight readable noiseless operation。 Thetouch screen monitor need more Fanless PC has shot through the sky with everyone wanting such a computer。

With the increase in quality of theatreIndustrial pc PCs and， the customized fanless computer is growing in quality。 Fanless all in one PCs use a mix of sound moistening cases， robust passive cooling and correct flow of air to chill parts that may otherwise want loud， large fans to chillBox PC them。 Heat build up is the primary concern in a fanless computer as managing all the heat generation without the fans is a difficult task。

Making a laptop noiseless means you would like a fanless UPS， and low power CPU and no disk drive。 No fan impliesVideo wall that no air is being drawn through the case， cooling the inside area of the pc and no air is cooling the power supply itself。 You need a CPU that may be passively cooled with a heat sink or via heat pipes that transfer the heat generated to the pc caseIP66。

Get a computer processor that generates as little heat as possible。 Then you may be ready to cool the chip solely by employing a conductor。 You will then be ready to cool the processor with a slower running and quieter fan if it generates less heat。 This whole process makes the entire operation of computers seemingly noiseless freeing the users of constant annoyance。

Choose a 3D graphics card that does not require its own fan toAll in one computer stay cool， unless you are an extreme game player and want the quickest of the cards available。 Then your noiseless computer possibility is by employing a water cooling system。 This system is the best solution for cooling computers that requires high performance in overclocking situation。

Some motherboards currently have inbuilt support for temperature measure and fan motion off once it is not required。 A number of them even have inbuilt fan speed control as per their requirement， and these are to appear for when selecting a motherboard for a noiseless computer。 Closed fan heat sinks are usually regarded having higher cooling properties than the cheaper ones and these days most computer users frequently use heat sinks for cooling the heat generated by their computers。

slide bearing-Know About Construction of Aluminum Slide Gates

Aluminum slide gslide bearingates are easy to customize in major styles like villa style， fortress & palace style， castle style， cottage style and so on。 For the construction of any style slide aluminum gates， metal work specialists consider the size， shape and other details indicated in the gate schedule thoroughly。

Aluminum gates and iron fences are of high importance in residential and commercial areas。 They are used to maintain privacy， enhance appearance and support complete safety of spaces。 Depending on the choices and budget of individuals， the gates can be selected as semi-private， private and different decorative styles。

The styles like double gate with top rail， double aluminum gate， fortress style， villa style， cottage style and palace style are more in demand。 All these styles vary in terms of designs， size and other specification aspects； therefore， professional metal work specialists always consider the construction details indicated in the gate schedule to deliver the desired products to clients。

Frame

The frame can be channel mount or flat back。 The frame is selected with great attention as it is considered as an integral component of structural shapes。 Another point to consider is the designing of holes and to assemble such holes properly to form the waterway openings。 The head channels being another useful concern are sufficiently spaced to support easy removal of the gate slide。 To avoid metal to metal contact between the frames and slide of gates， the experts use polymer guide liner。

Manual lifts

In the construction of aluminum gates， the next point to consider is to design the lifts as geared crank type or handwheel mentioned in the construction schedule。 The lifts are designed with having bronze lift nuts， thrust bearings and a bronze stop nut to control the downward movement of the slide。 Lifts are also made with the concern to make its grease lubrication simple when needed。

Stems & seals

About gate stem， the stem is designed with the property to withstand twicePlastic bearing the force exerted by a pull on the crank or handwheel。 To support the stem， experts use cast iron stem guides or angle guides and cast bronze guide collar to maintain the appropriate ratio of spaces。

Seals are also important for better functioning of iron fences or aluminum slide gates。 The seals are securely fastened and are designed with the features of easy to replace and adjust by the users。

The construction step of gate doesn´t end here。 It involves a lot more aspects to consider like the slide， flush bottom and motor operated lift with integral controls like a control power transformer， space heater， limit switches， open-closed push buttons etc。 With all these aspects， the gates are designed and constructed with extensive care and attention to help one find the perfect product to suit the needs。

powder metal-The Powder Coating Process

Although powder sintered metalcoating was become pregnant as a technique of finishing metal， innovation has actually evolved to make sure that it is now a common choice for ceramics， plastics and even timber。 Study shows that powder coating is the fastest expanding covering tool and with the ecological advantages coupled with its excellent finishing properties， it is a fad that is most likely to continue。 Sorts of grain coatingThere arepowder metal 2 primary sorts of powder coatings； thermosets and thermoplasticsWith thermosetting variations， as the powder cooks， it responds with chemicals in the particle polymer which boosts little weight； enhancing the efficiency residential properties。 Polycarbonate types do not alter especially nor have any added responses， it simply flows out into the final coating。

Powder coating processStage 1 - Pre therapy This concerns prepping the element or component， and as any sort of painting application， groundwork is all essential to accomplish the best possible appearance。 It is essential to eliminate oils and lubes and steel oxides and this is carried out typically by a range of chemical and mechanical procedures，sintered metal dependent likewise upon the dimension， product， and finish required。 The several period chemical pre-treatments typically entail using phosphates or chromates in submersion or by splashing。 From an environmental perspective those supplying phosphate preparations are my favored option as chromates can be dangerous to the environment。

Yet another approach of groundwork is sandblasting and shot-blasting， where blasting abrasives are utilized to offer surface structure and groundwork for glass， plastic or wood。 Silicone carbide is suitable for grinding metals and plastic media blasting usages plastic abrasives that are sensitive to substrates such as aluminium。 Stage2 - Thepowder metal particle applicationThe most used technique is electrostatic spraying through a spray gun。 The object is grounded and the gun divulges a positive electric powered cost onto the particle which is then sprayed and accelerated towards the element by the effective electrostatic fee。 The element is heated up， and the agent merges a systematic movie， and cooled down to develop a hard finish。 We at times heat up the metal initially and spray the particle onto the warm substrate。 Pre-heating can aid to attain a much more systematic surface but can easily also create various other complications， such as runs created by excess powder。

Agent may likewise be administered making use of specifically adjusted electrostatic discs。 An additional approach， known as the Fluidised Bed procedure， involves warming the substrate and then soaking it in to an aerated， powder-filled bed。 The powder sticks and thaws to the warm things， with further heating needed to complete healing the coating。 When the covering surpasses 300 micros， this technique is normally used。 Electrostatic Fluidised Bed Covering: Electrostatic fluidised bed application makes use of the same fluidising procedures as above but with considerably less grain depth in the bed。 Electrostatic charging happens in the bed to make sure that the particle becomes charged as the fluidising air lifts it up。 Charged grain bits develop a cloud of charged particle above the fluid bed。 When a grounded component is travelled through the charged cloud the particles will be attracted to its area。 The parts are not pre-heated。