CRY CRY CRY

我发觉自己越来越没用了，碰到点挫折就会哭鼻子，最近事情来得个烦，碰到很难沟通的人，或是态度很不好的人，特别是语气很不好的时候，我竟会很想哭，我在想是不是好久没有掉眼泪了，积在眼睛里的泪太多了，还是我越来越脆弱了。我一直以来以THICK-FACE自居，怎么会变成现在这个样子啊。真搞不东自己啊。 automotive bearings automotive bearings Pneumatic Cylinders hydraulic valves 鹅肥肝

Just one last dance

Just one last dance....oh baby...just one last dance
We meet in the night in the Spanish café
I look in your eyes just don't know what to say
It feels like I'm drowning in salty water
A few hours left 'til the sun's gonna rise
tomorrow will come an it's time to realize
our love has finished forever
how I wish to come with you (wish to come with you)
how I wish we make it through
Just one last dance
before we say goodbye
when we sway and turn round and round and round
it's like the first time
Just one more chance
hold me tight and keep me warm
cause the night is getting cold
and I don't know where I belong
Just one last dance
The wine and the lights and the Spanish guitar
I'll never forget how romantic they are
but I know, tomorrow I'll lose the one I love
There's no way to come with you
it's the only way to do
Just one last dance
before we say goodbye
when we sway and turn round and round and round
it's like the first time
Just one more chance
hold me tight and keep me warm
cause the night is getting cold
and I don't know where I belong
Just one last dance
Oh,Baby
Just one last dance
before we say goodbye
when we sway and turn round and round and round
it's like the first time
Just one more chance
hold me tight and keep me warm
cause the night is getting cold
and I don't know where I belong
Just one last dance
before we say goodbye
when we sway and turn round and round and round (When we sway turn around)
it's like the first time(hold my tight oh my love)
Just one more chance
hold me tight and keep me warm
cause the night is getting cold(the night is getting cold)
and I don't know where I belong(don't know where I belong)
Just one last dance
Just one last dance
Just one more chance
Just one last dance
Over... wind generators wind turbine 合肥汽车租赁 合肥租车 尿毒症 风力发电机 风力发电机

听见夏天的离开

见--听见夏天的离开我在某年某月醒过来
我想我等我期待未来却不能因此安排
阴天傍晚车窗外未来有一个人在等待
向左向右向前看爱要拐几个弯才来
我遇见谁会有怎样的对白
我等的人他在多远的未来
我听见风来自地铁和人海
我排著队拿著爱的号码牌
我往前飞飞过一片时间海
我们也曾在爱情里受伤害
我看著路梦的入口有点窄
我遇见你是最美丽的意外
总有一天我的谜底会解开

歌词 写的真的是很不错哦! die casting aluminum die casting oil paintings solar lamp

有点迷茫

突然间就那么想念校园时光,突然间就那么想念曾经的在一起的朋友们,没来由就回流泪,我还以为这么几年来,对校园里的一切会被淡淡遗忘,可是,还是想念起来,原来什么都没忘.
或许是夏天这个季节太特殊,总让我想到离别,所以真的特别想念曾经干净简单的一切.有时候走在街上,看见小情侣们手牵手一起逛街,就会想到曾经的我们,幸好,KF还一如既往的陪在我身边,让我可以唯一延续对校园时光的眷恋,让我至少还有依靠和寄托.也会不经意间就会想起和他的曾经,那么纯粹,那么简单,那么单纯.呵呵,想起这些,依旧会发自内心的笑.
其实很羡慕姗姗,青青还有宝华他们,这些家伙还能有事没事时常聚一聚,一群姐妹淘可以逛街,喝茶,聊天，可以肆无忌惮,让我羡慕,曾经也不顾一切的冲到她们那里,想要跟她们一起安定下来,可是被KF一个电话,一句话就拉了回来,感情啊;
现在的我,还是一如既往的孤单,甚至比以前孤单千百倍,在这个工作的地方,没有亲人,没有朋友,虽然也有一帮好同事在一起疯,可是,的确没有曾经那种感觉,找不到,也许校园真的不能与社会相比,社会上的人,总不得不让我提防三分,我不喜欢与人争吵,也不喜欢与人太亲近,幸好这个习惯还不赖.
我是个不能轻易让自己难过的人,所以还是觉得应该追随KF,他在哪里,我就去哪里,所以赶紧跟领导交了辞职报告,以前也老想着要走，可是看看工资还不错,而且领导也对我不赖的分上,觉得留在这里也不错,不知道为什么这次特别坚决,也许是因为夏天?
die casting aluminum die casting oil paintings solar lamp呵呵,把工作交接了,再休息半个月,想想这种日子是我向往的,可是,领导至今还不死心,没有让我交接的意思,就这么把我留着,哼,我才不管,哪天提出辞职,一个月交接期到了就立马走人,随便她交接不交接.

Ductile Iron Casting

Ductile iron, a synthetic metal material that was invented in the middle of the twentieth century, is one of the types of iron used to make cast iron. In general, ductile iron has a higher tensile strength than grey iron, the kind of iron traditionally used to make cast iron products. Ductile iron, as its name suggests, is more ductile than traditional iron materials, which tend to be more brittle and prone to fracture under high tensile stress.

Ductile iron is commonly used to make cast iron pipes, like those used in water and sewer lines. Ductile iron is used for a variety of applications in many different industries. These industries include, but are not limited to agriculture, automotive, irrigation, ventilation, hydraulics, and manufacturing.

Aluminum Castings china

Aluminum casting is a metal forming process in which molten aluminum metal is put under pressure and injected into a die. Aluminum die casts are lightweight alloys that have good corrosion resistance, mechanical properties, high thermal and electrical conductivity and strength at high temperatures. Aluminum alloys possess high dimensional stability for complex shapes and thin walls.

Aluminum casting is efficient and economical and offers a wide range of durable shapes and components. Little or no machining is required after a part is die cast, because the process provides very close tolerances for even complex shapes. Aluminum castings can also be easily plated or finished. Aluminum castings are dimensionally stable and heat resistant.

Aluminum castings are commonly used in the production of hardware and tools because of their great resistance to corrosion and high temperatures, as well as their conductivity. In addition, aluminum castings are used in applications requiring the production of intricate part features and components.

sand casting Molding box and materials

A multi-part molding box (known as a casting flask, the top and bottom halves of which are known respectively as the cope and drag) is prepared to receive the pattern. Molding boxes are made in segments that may be latched to each other and to end closures. For a simple object¡ªflat on one side¡ªthe lower portion of the box, closed at the bottom, will be filled with prepared casting sand or green sand¡ªa slightly moist mixture of sand and clay. The sand is packed in through a vibratory process called ramming and, in this case, periodically screeded level. The surface of the sand may then be stabilized with a sizing compound. The pattern is placed on the sand and another molding box segment is added. Additional sand is rammed over and around the pattern. Finally a cover is placed on the box and it is turned and unlatched, so that the halves of the mold may be parted and the pattern with its sprue and vent patterns removed. Additional sizing may be added and any defects introduced by the removal of the pattern are corrected. The box is closed again. This forms a "green" mold which must be dried to receive the hot metal. If the mold is not sufficiently dried a steam explosion can occur that can throw molten metal about. In some cases, the sand may be oiled instead of moistened, which makes possible casting without waiting for the sand to dry. Sand may also be bonded by chemical binders, such as furane resins or amine-hardened resins.

Chills

To control the solidification and metallurgical structure of the metal, it is possible to place metal plates¡ªchills¡ª in the mold. The associated rapid local cooling will form a finer-grained structure and may form a somewhat harder metal at these locations. In ferrous castings the effect is similar to quenching metals in forge work. The inner diameter of an engine cylinder is made hard by a chilling core. In other metals chills may be used to promote directional solidification of the casting. In controlling the way a casting freezes it is possible to prevent internal voids or porosity inside castings.

Cores

To produce cavities within the casting¡ªsuch as for liquid cooling in engine blocks and cylinder heads¡ªnegative forms are used to produce cores. Usually sand-molded, cores are inserted into the casting box after removal of the pattern. Whenever possible, designs are made that avoid the use of cores, due to the additional set-up time and thus greater cost.
Two sets of castings (bronze and aluminium) from the above sand mold
Two sets of castings (bronze and aluminium) from the above sand mold

With a completed mold at the appropriate moisture content, the box containing the sand mold is then positioned for filling with molten metal¡ªtypically iron, steel, bronze, brass, aluminium die casitng, magnesium alloys, or various pot metal alloys, which often include lead, tin, and zinc. After filling with liquid metal the box is set aside until the metal is sufficiently cool to be strong. The sand is then removed revealing a rough casting that, in the case of iron or steel, may still be glowing red. When casting with metals like iron or lead, which are significantly heavier than the casting sand, the casting flask is often covered with a heavy plate to prevent a problem known as floating the mold. Floating the mold occurs when the pressure of the metal pushes the sand above the mold cavity out of shape, causing the casting to fail.
Left:- Corebox, with resulting (wire reinforced) cores directly below. Right:- Pattern (used with the core) and the resulting casting below (the wires are from the remains of the core)
Left:- Corebox, with resulting (wire reinforced) cores directly below. Right:- Pattern (used with the core) and the resulting casting below (the wires are from the remains of the core)

After die casting, the cores are broken up by rods or shot and removed from the casting. The metal from the sprue and risers is cut from the rough casting. Various heat treatments may be applied to relieve stresses from the initial cooling and to add hardness¡ªin the case of steel or iron, by quenching in water or oil. The casting may be further strengthened by surface compression treatment¡ªlike shot peening¡ªthat adds resistance to tensile cracking and smooths the rough surface.oil painting,Oil Painting Reproduction

Design requirements

The part to be made and its pattern must be designed to accommodate each stage of the process, as it must be possible to remove the pattern without disturbing the molding sand and to have proper locations to receive and position the cores. A slight taper, known as draft, must be used on surfaces perpendicular to the parting line, in order to be able to remove the pattern from the mold. This requirement also applies to cores, as they must be removed from the core box in which they are formed. The sprue and risers must be arranged to allow a proper flow of metal and gasses within the mold in order to avoid an incomplete casting. Should a piece of core or mold become dislodged it may be embedded in the final casting, forming a sand pit, which may render the casting unusable. Gas pockets can cause internal voids. These may be immediately visible or may only be revealed after extensive machining has been performed. For critical applications, or where the cost of wasted effort is a factor, non-destructive testing methods may be applied before further work is performed.

Essential improvements of the foundry technology

An increasing demand for castings in the growing car and machine building industry during and after the World War One and Two, stimulated new inventions in mechanization and later automation of the sand casting process technology. The bottleneck for a faster casting production was not only the molding speed, but also slow molding sand preparation in the slow sand mixers, slow core manufacturing processes and slow metal melting rate in the cupola furnaces. In 1912 sand slinger was invented by the American Company Birdsley & Piper. In 1912 the first sand mixer with individually mounted revolving plows was marketed by Simpson Company. In 1915 first experiments started with bentonite clay in stead of simple fireclay as bonding additive to the molding sand. This increased tremendously the green and dry strength of the moulds. In 1918 the first fully automated foundry fabricating hand grenades for the U.S. Army. In 1930 first high-frequency coreless electric furnace was installed in the U.S. In 1924 Henry Ford sets record producing 1 million cars, consuming one-third of the total casting production in the U.S. In 1943 ductile iron was invented by adding magnesium to the widely used grey iron. In 1940 thermal sand reclamation was applied for molding and core sands. In 1952 D-process was developed for making shell molds with fine, pre-coated sand. In 1953 hotbox core sand process was invented by thermally curing cores. In 1954 a new core binder - water glass hardened with CO2 from the ambient air, was applied.