現代上班族工作壓力大，心理師指出，過度焦慮會讓體內的壓力荷爾蒙上升，增加生病的可能。內在心理與外在健康常常是相互影響的，上班一整天面對壓力，回家更需要舒緩身心、保持愉悅心情，提升自身免疫力；但如果一回家只想慵懶放鬆，沒有時間種植物，更別說是養寵物了，居家生活可以怎麼減壓放鬆？就讓我們從簡單的居家佈置下手，開門瞬間就被療癒！讓整天的疲勞一掃而空！
居家風格千變萬化，不論是簡約風、鄉村風、古典風，或是工業風都各有所好。然而，小動物造型的居家佈置，總是能完美融入各種室內風格，不管用什麼樣的方式呈現在居家空間中，它們都能為你的家增添溫馨療癒的氣氛。最受大眾喜愛的兔子、小貓、小狗等寵物系，小熊、狐狸、小松鼠等森林系，企鵝、小海狗、北極熊等冰涼系，以及鯨豚、水母、小丑魚等海洋系，只要超萌小動物當室友，回到家就能被療癒！
選擇特殊造型或圖案的抱枕，放在玄關椅上、客廳沙發上、臥室床上，或是和室的閱讀角落，隨時都可以享受愛的抱抱，讓療癒的抱枕天天向你散播愛的能量！
可養寵、可租補、台水台電計費等各種特色房源等你來搜尋
Keyword: 裝潢
出租廣告刊登後無人聞問，除了靠優惠價格之外，該怎麼做才能讓自己的房源從市場脫穎而出呢？房產專家建議，與其壓低租金價格出租，不如在裝修上多加些預算，反而能讓套房在最短的時間內出租、維持穩定續約及出租率、甚至提升更高的租金。扣掉房源本身的條件外，稍微花點小心思，就可以讓出租套房的地位一躍而上，成為特別吸睛的特色套房。
你知道嗎？其實房東可以透過一些拍照、佈置的小技巧，不必花費高額的裝潢費用，就能讓房源更優化！
風格是看房的第一印象，也是房客留下記憶點的重要關鍵，如何讓房客看了十幾、二十間房後，依然能記住你的套房（即便你的租金比別人都還高），擁有一個令人難忘的風格，對房東出租來說絕對是至關重要！
房東在裝修時，可以先設定出租套房要呈現的風格，現在已有許多容易上手且適合套房的風格，例如北歐風、日式無印風、時尚的現代風等。選定套房的顏色主題，決定套房大致的色調。套房佈置好比穿搭，房東要先決定好整體風格、色系，有統一的視覺感，就能成為搶先吸引房客目光的特色房源，大大提升出租機會。
網路上有許多出租套房設計案例，證明了小套房也可以被房東布置得很時尚！
決定好套房的風格及色系後，可以再挑選一些飾品，讓搭配更精緻。善用裝飾小物來增添套房氣氛，更能凸顯風格特色、增添溫馨感。套房出租也可以像是飯店或民宿的房間一樣，使用許多的「感心」小物，適度放上生活用品，讓人一進入套房內就有歸屬感，能夠更快吸引房客入住，租金入袋就不是問題。
例如床鋪用溫馨的床單取代冰冷的裸床，或是在套房浴室的台面上擺放多肉小植栽，選購有品牌的沐浴用品擺放，當作出租入住禮擄獲房客的心，讓人一看了就想趕快入住！
在空間視覺上，鏡子可以達到放大套房的效果，讓小空間看起來寬敞許多，一旦感覺寬敞舒適，成交率自然也就提升囉！可以將鏡面擺放在窗邊，將室外的自然光反射至套房內，提升室內的照明度也順便省電。
立即刊登物件
住宅、店面、辦公室、車位等空間皆可刊登出租，現在就來租租通尋找好租客吧
Keyword: 裝潢
Researchers found that the use of tannic acid-modified ZIF-8 improves hydrophilicity and significantly increases the performance of reverse osmosis membranes.
The research proves that the integration of tannic acid-modified ZIF-8 into reverse osmosis membranes leads to a significant increase in permeability and improves salt retention.
Metal–organic frameworks (MOFs) are widely employed in designing nanocomposite membranes owing to their excellent performance and diversity. However, their inherent hydrophobicity limits their application in nanocomposite membranes. In order to improve the hydrophilicity of zeolitic imidazolate framework-8 (ZIF-8), tannic acid (TA) was utilized to etch-modify it, resulting in a TA-ZIF-8 nanostructure with a hydrophilic shell. TA-ZIF-8 was subsequently introduced into the aqueous phase and used to prepare a nanocomposite matrix reverse osmosis membrane through interfacial polymerization (IP).
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The prepared nanocomposite reverse osmosis membrane had a surface with good hydrophilicity and a pure water flux increased to 55.28 L m−2 h−1 (approximately 1.74 times). Additionally, the introduction of TA-ZIF-8 significantly enhanced the electronegativity of the membrane surface, and the nanoparticles were compatible with the polyamide layer, leading to a salt rejection rate of up to 99.5% for a NaCl solution with a concentration of 32000 ppm. These results indicate great potential for applying hydrophilically modified ZIF-8 to reverse osmosis membranes.
This research has been published in the Journal of Coatings Technology and Research, Volume 21, 2024.
PINGXIANG CHEMSHUN CERAMICS CO., LTD
Non-metal Area of Shangliuyuan, Economic Development Zone,
Pingxiang City,Jiangxi Province, PR China. Zip Code:337000
Tel: +86-799-6790781 Fax: +86-799-6790785
Website: www.chemshun.com; Email: offfice@chemshun.com
Co.Tax No.: 91360301744293643Y
TECHNICAL DATA SHEET (TDS)
Recrystallized Silicon Carbide Ceramic Product （R-SiC）
No.
Properties
Unit
Value
1
SiC
%
99
2
Bulk Density
g/cm3
2.7
3
Apparent porosity
%
<18
4
Modulus of rupture at 20℃
Mpa
90-100
Modulus of rupture at 1300℃
Mpa
110-120
5
Vickers hardness at 20℃
Kg/mm2
>1800
6
Thermal conductivity at 20℃
W/m·K
105-225
Thermal conductivity at 1200℃
W/m·K
35-36
7
Coefficient of thermal expansion at 1200℃
× 10-6/°C
4.2-4.8
8
Maximum Use Temperature
℃
1600
PINGXIANG CHEMSHUN CERAMICS CO., LTD.
Analogue for
Munters, Christy Catalytics, Koch-Glitsch, AMACS, Ultimo Engineers, MTE, Pall Ring Company, НКС DOLSIN, MACH Engineering LLC
Producer
BTS Engineering
Application
насадочных колонн, декарбонизатора, очистки газов, десорбера, абсорбера, дегидратации, дистиляции, ректификации, сатурации воды
The refractory ball is made of alumina and refractory kaolin. It is made by scientific formula, molding and high temperature calcination. It is especially suitable for high and low temperature shifting furnace, reforming furnace, hydroconverter, desulfurization tank and methanation furnace of fertilizer plant. In the process of dispersing gas and liquid, supporting, covering and protecting the catalyst. Refractory balls can also be used in hot blast stoves and heating converters in the steel industry. The refractory ball is divided into: mechanism mullite ball, mechanism aluminum magnesium ball, mechanism high strength high density high aluminum ball, high aluminum 65 low creep ball, high aluminum 75 low creep ball, mechanism magnesium aluminum chrome ball, mechanism magnesium chromium Ball, handmade magnesium chrome ball, high strength high aluminum ball, hand low creep ball.
Both steel and cast iron are popular metals, but they are often used very differently. The key factor distinguishing one from the other is how much carbon each contains, and to a lesser extent, how much silicon. While this may seem like a subtle distinction, it has major implications for the properties and uses of cast iron and steel.
This article explains what makes cast iron and steel unique to help you decide which metal is the right choice for your next casting project.
Like steel, cast iron is an iron-based alloy. However, to be considered cast iron, the metal must have a 2-4% carbon content and 1-3% silicon content by weight. This chemistry imparts cast iron with a number of useful properties:
Cast iron can actually be further subdivided into grey iron, white iron, ductile iron, and malleable iron. Each type focuses on improving certain properties for a specific application, like higher hardness in white cast iron.
The uses for cast iron are wide-reaching, but here are a few notable applications:
Similar to cast iron, steels are iron-based alloys with a few distinct categories. All steels have some carbon content up to a limit of 2% by weight and can be divided into either carbon steel or alloy steel.
They can be further subdivided into low-carbon steels, stainless steels, tool steels, microalloyed steels, and more. While these can offer numerous additional benefits, like high strength and corrosion resistance from stainless steels, this article will focus on cast steel alloys like those defined by ASTM A148.
Since cast steel is more expensive than cast iron, its main advantages over cast iron are:
While forging, rolling, and casting are all possible for steel products, some key applications focused on cast steel are:
This table provides a generalized comparison of cast iron vs steel, keeping in mind that each category represents a range of alloys with different properties.
Material Property Cast Iron Cast Steel Strength Better compressive strength Better tensile strength Toughness Low ductility and limited elongation Much higher ductility and toughness Hardness Good, comparable Good, comparable Melting Temperature Lower, which makes production easier Higher melting temperature Corrosion Resistance Better, frequently limited to surface rust Poor for cast carbon steel, but stainless alloys offer superior rust protection Machinability Easier to machine More time consuming and hard on tooling Weldability Difficult to weld without cracking Better weldability, ranging from poor to very good. Cost Less expensive to melt, pour, and process. More challenging and costly to produce
Cast iron is certainly easier and cheaper to machine than cast steel, but machinability varies widely between different alloys, even in the same group. So if you’re designing a product that will need lengthy machining operations, it may be worthwhile to review available alloys in search of one with better machinability.
But even if you are restricted to using a more difficult-to-machine material, an experienced, world-class machine shop can cut down processing times to save on machining costs. Gensun offers fast, reliable machining services for a wide range of materials and product types.
Keyword: flange machining
1 channel peeling off at the extreme position of one side
The spalling at the extreme position of the channel is mainly manifested in the severe spalling zone at the junction of the channel and the rib. The reason is that the bearing is not installed in place or the axial overload is sudden during operation.
The countermeasures taken are to ensure that the bearing is installed in place or change the outer ring fit of the free side bearing to a clearance fit, so that the bearing will be compensated when the bearing is overloaded.
If it is not possible to ensure that the installation is in place, you can increase the thickness of the lubricant film (increase the viscosity of the lubricant), or reduce the load on the bearing to reduce the direct contact of the bearing.
2 The channel peels off at a symmetrical position in the circumferential direction
Symmetrical position peeling is manifested in the inner ring being peeling off the surrounding belt, while the outer ring is peeling off in a circumferentially symmetrical position (that is, in the direction of the minor axis of the ellipse). The main reason is that the shell hole is too large or the two-half separated shell hole structure. The performance is particularly obvious in camshaft bearings for motorcycles.
When the bearing is pressed into the larger elliptical housing hole or the two halves of the separated housing are tightened, the outer ring of the bearing is elliptical, and the clearance in the minor axis direction is significantly reduced or even negative clearance.
Under the action of load, the inner ring rotates to produce circumferential peeling marks, and the outer ring only produces peeling marks at symmetrical positions in the minor axis direction. This is the main reason for the early failure of the bearing. The inspection of the failed parts of the bearing shows that the roundness of the outer diameter of the bearing has changed from 0.8um controlled by the original process to 27um. This value is much larger than the radial clearance value.
Therefore, it can be affirmed that the bearing is working under severe deformation and negative clearance, and the working surface is prone to early abnormal sharp wear and peeling.
The countermeasure adopted is to improve the processing accuracy of the shell hole or avoid the use of the two-half separation structure of the shell hole as much as possible.
3 raceway slant peeling
The inclined peeling ring on the working surface of the bearing indicates that the bearing is working in an inclined state. When the inclination angle reaches or exceeds the critical state, it is easy to form abnormal sharp wear and peeling early. The main reasons are poor installation, shaft deflection, low precision of journal and housing hole, etc.
Take countermeasures to ensure the bearing installation quality and improve the axial runout accuracy of the shaft shoulder and hole shoulder, or increase the viscosity of the lubricant to obtain a thicker lubricant film.
4 Ferrule fracture
Ferrule fracture failure is relatively rare, usually caused by sudden overload. The causes are more complicated, such as bearing material defects (bubble shrinkage), forging defects (overburning), heat treatment defects (overheating), machining defects (local burns or surface micro-cracks), host defects (poor installation, poor lubrication, transient Overload) and so on. Overload, impact load or severe vibration may cause the ferrule to break.
The countermeasures adopted are to avoid overload impact load, select appropriate interference, improve installation accuracy, improve use conditions and strengthen quality control in the bearing manufacturing process.
5 The cage is broken
Cage fracture is an occasional abnormal failure mode. The main reasons are the following:
a. Abnormal load of cage
Such as improper installation, tilting, excessive interference, etc., it is easy to reduce the clearance, increase friction and heat generation, soften the surface, and cause abnormal peeling prematurely.
As the spalling expands, the spalled foreign matter enters the cage pockets, causing the cage to block operation and generate additional loads, which intensifies the wear of the cage. Such a deteriorating cyclic effect may cause the cage to break.
b. Poor lubrication
It mainly means that the bearing is running in a lean state, which is easy to form adhesive wear and deteriorate the working surface. The tears produced by the adhesive wear are easy to enter the cage, causing abnormal load on the cage, and possibly causing the cage to break.
c. The intrusion of foreign objects is a common mode of cage fracture failure
Due to the intrusion of foreign hard foreign objects, the wear of the cage is aggravated and the abnormal additional load is generated, which may also cause the cage to break.
d. Creep phenomenon is also one of the reasons for cage fracture
The so-called creeping multi-finger ferrule sliding phenomenon, in the case of insufficient interference of the mating surface, the load point moves in the surrounding direction due to the sliding, and the ferrule deviates from the shaft or the housing in the circumferential direction.
Once creep occurs, the mating surface is significantly worn, and the wear powder may enter the inside of the bearing, forming abnormal wear-raceway peeling-cage wear and additional load process, and may even cause cage fracture.
e. Defects in cage material(Such as cracks, large dissimilar metal inclusions, shrinkage holes, bubbles) and riveting defects (missing nails, pad nails or gaps between the two cage halves, severe riveting), etc. may cause the cage to break. Take countermeasures to strictly control the manufacturing process.
6 Getting stuck
The so-called seizure is a surface damage caused by a collection of minute burns on the part caused by damage to the sliding surface. Linear scars on the circumference of the slideway surface and the rolling surface. Cycloid-like scars on the roller end surface, jamming of the collar surface near the roller end surface.
The main causes of jams are: excessive load, excessive preload, poor lubrication, foreign matter bite, tilt of inner ring and outer ring, shaft deflection, poor precision of shaft and bearing box, etc.
It can be solved by proper preloading, improving the lubricant and lubrication method, and improving the accuracy of the shaft and bearing box.
7 wear
Wear failure refers to the failure caused by the continuous wear of the metal on the working surface caused by the relative sliding friction between the surfaces. The main factors causing wear failure are lubricant failure or lack of lubricant, incorrect lubrication method, abrasive particles entering the inside of the bearing, and excessive load.
The solution can be through improving the lubricant or improving the lubrication method, strengthening the sealing mechanism and so on.
8 bruises
The so-called scratches are surface damages that occur on the raceway surface and rolling surface due to the small burns caused by rolling slippage and oil film thermal cracking.
Produces a rough surface with adhesion. The main causes of scratches are high-speed light load, rapid acceleration and deceleration, improper lubricant, and water intrusion.
Solution: improve the preload, improve the bearing clearance, use a lubricant with good oil film properties, improve the lubrication method, improve the sealing device, etc.
9 indentation
When small metal powders or foreign objects are bitten, the dents generated on the raceway surface or the rotating surface or the impact is received during installation, the concave surface (Brinell hardness indentation) is formed in the pitch interval of the rolling elements.
The main factors that cause indentation are: metal powder and other foreign objects bite, and the impact load received during assembly or transportation is too large.
Solution: Improve the sealing device, filter the lubricating oil, improve the assembly and use methods, etc.
10 burns
The raceways, rolling elements and cages rapidly heat up during rotation until they are discolored, softened, welded and damaged. The causes of burns include poor lubrication, excessive load (excessive preload), excessive speed, too small clearance, intrusion of water and foreign matter, poor accuracy of shafts and bearing boxes, and large shaft deflection.
It can be solved by improving the lubricant and lubrication method, correcting the selection of the bearing, studying the fit, bearing clearance and preload, improving the sealing device, checking the accuracy of the shaft and the bearing box, or improving the installation method.
11 current corrosion
The so-called galvanic corrosion means that when the current flows in the contact part of the rotating bearing ring and the rolling element, sparks are emitted through the thin lubricating oil film, and the surface of the surface appears local melting and unevenness.
The main cause of current corrosion is the potential difference between the outer ring and the inner ring and the effect of static electricity.
Solution: When setting the circuit, the current does not pass through the bearing, and the bearing is insulated and grounded statically.
12 rust and corrosion
The rust and corrosion of the bearing include the pit-like rust on the surface of the raceway, the rolling element, and the overall rust and corrosion. The rust and corrosion of the bearing will cause pit-like rust, pear-skin-like rust and pit-like rust with the same interval between the rolling elements, overall rust and corrosion on the surface of the rings and rolling elements.
There are many reasons for the rust, corrosion and failure of rolling bearings. The main ones are: the intrusion of water and corrosive substances (paint, gas, etc.), the improper lubricant, the water droplets attached due to the condensation of water vapor, the stall at high temperature and humidity, and the transportation process Poor rust prevention, improper storage condition, improper use, etc.
The solutions are: improve the sealing device, study the lubrication method, prevent rust measures when stopping, improve the storage method, and pay attention to it when using it.
In addition to the above-mentioned common failure modes, rolling bearings still have many failure modes in actual operation, which await our further analysis and research.
In summary, it can be known from the common failure mechanisms and failure modes of bearings that although rolling bearings are a precise and reliable mechanism foundation, improper use can also cause early failure.
Under normal circumstances, if the bearing can be used correctly, it can be used until the fatigue life. The early failure of the bearing is mostly caused by factors such as the manufacturing accuracy, installation quality, use conditions, lubrication effect, foreign matter intrusion, thermal influence and sudden failure of the host.
Therefore, the correct and reasonable use of bearings is a systematic project. In the process of bearing structure design, manufacturing and installation, taking corresponding measures for the links that produce early failures can effectively increase the service life of the bearings and the host.
Keyword: milling
在我們日常烹飪中，竹砧板是不可或缺的一部分，但它的清潔與衛生問題卻常被忽視，這直接關係到我們的健康。 歸納要點:
了解竹砧板清潔的重要性，以及如何選擇安全且環保的清潔方式，是確保家庭廚房衛生的關鍵。
**竹砧板：你廚房裡隱藏的健康危機？**近年來，竹砧板因其環保和美觀而受到青睞，但它們真的安全嗎？研究顯示，竹材的纖維結構容易滋生細菌，尤其是在刀痕處。這些細微裂縫不僅難以清潔，還可能成為病菌溫床。竹材中的天然油脂在細菌分解後也可能釋放有害物質。選擇時，你是否注意到表面光滑度與定期消毒的重要性？
**竹砧板的微觀世界：隱藏的細菌叢落**
Keyword: 裝修
現代上班族工作壓力大，心理師指出，過度焦慮會讓體內的壓力荷爾蒙上升，增加生病的可能。內在心理與外在健康常常是相互影響的，上班一整天面對壓力，回家更需要舒緩身心、保持愉悅心情，提升自身免疫力；但如果一回家只想慵懶放鬆，沒有時間種植物，更別說是養寵物了，居家生活可以怎麼減壓放鬆？就讓我們從簡單的居家佈置下手，開門瞬間就被療癒！讓整天的疲勞一掃而空！
居家風格千變萬化，不論是簡約風、鄉村風、古典風，或是工業風都各有所好。然而，小動物造型的居家佈置，總是能完美融入各種室內風格，不管用什麼樣的方式呈現在居家空間中，它們都能為你的家增添溫馨療癒的氣氛。最受大眾喜愛的兔子、小貓、小狗等寵物系，小熊、狐狸、小松鼠等森林系，企鵝、小海狗、北極熊等冰涼系，以及鯨豚、水母、小丑魚等海洋系，只要超萌小動物當室友，回到家就能被療癒！
選擇特殊造型或圖案的抱枕，放在玄關椅上、客廳沙發上、臥室床上，或是和室的閱讀角落，隨時都可以享受愛的抱抱，讓療癒的抱枕天天向你散播愛的能量！
可養寵、可租補、台水台電計費等各種特色房源等你來搜尋
Keyword: 裝潢
The SKF Cooper sealed split spherical roller bearing, the only sealed split spherical roller bearing currently on the market, has earned a 2020 Manufacturer Excellence Award for Innovation in Product Design from the Bearing Specialists Association (BSA). This the third BSA Manufacturer Excellence Award for SKF. The company was honored in 2019 for the SKF Pulse vibration sensor and mobile app, and in 2017 for the SKF Multilog On-Line system.
Both the open and sealed versions of SKF Cooper split spherical roller bearings are designed for easy replacement with little disturbance to the shaft alignment or driveline and eliminate the need to remove attached equipment. This innovative solution reduces mean time to repair (MTTR) and equipment downtime by up to 70 percent, which dramatically reduces customers’ cost of repair. The sealed version has a machined seal within the bearing for superior contamination protection. This reduces environmental impact by lowering grease consumption and is ideally suited for harsh application environments – such as conveyor pulleys, stacker re-claimers, and other critical equipment.
“We are honored to be recognized by our industry peers for the innovation and advantages SKF Cooper split spherical roller bearings offer customers. We’re proud of the safer working environment this product creates,” said Will Hidell, Vice President of Sales, Aftermarket, and Channel Management for SKF USA.
“More than 40% of accidents in the mining and cement industry occur while workers are examining or maintaining conveyors. By eliminating the need to dismount drive couplings or cantilevered drives during maintenance and replacement, our bearings help create even safer conditions for our customers’ personnel.”
The Bearing Manufacturer Excellence of Innovation in Product Design Award recognizes companies for innovation and excellence in product design or technology. BSA distributor members reviewed and ranked manufacturer’s innovation submissions and three submissions were recognized for their outstanding service to the end-use customer.
SKF
www.skf.com/us
Keyword: high-quality research peptides