zinc die casting-Information on Aluminium Gravity Die Casting Process

Gravity die castdie casting machineing is one of the standard processes for the manufacture of high-integrity automotive castings。 It represents proven and absolute precision technology for the production ofMulti slider die casting machine large batch quantities。 This process is used in carousel casting units or in shuttle technique particularly for the manufacture of engine castings。 Optimum heat dissipation from the solidifying casting through the die leads to short solidification times。 This results in castings which have good mechanical properties， especially after an additional heat treatment。

In addition to producing ever more complicated cylinder heads for petrol and diesel engines， this is also used for the manufacture of diesel engine blocks with cast-in grey iron liners。
Process description

In processes， the melt is metallurgical treated in the holding furnace， which is positioned near the dies?

The quantity of melt for one is transported in a ladle and poured into the riser system of the mould by tilting the ladle。 The melt fills the mould cavity smoothly from the bottom up until it appears in the risers positioned above the casting。

In the example shown， the casting of a cylinder head， the mould filling and solidification Conditions can be influenced by the design of the gating system and the risers in the top core。 Directional solidification can be forced by using water cooling in the bottom of the die。

Low pressures die casting

Low pressure die casting is a well-known process， especially for aluminium wheels in passenger cars。 The process is also used in the production of big V-engine blocksDie casting in hypereutectic aluminium alloys and in the casting of air-cooled cylinder heads for motor cycleszinc die casting。 Mould filling is controlled by regulating the pressure in the casting furnace。 The melt flows through the riser tube which is positioned under the melt surface of the furnace and fills the mould very smoothly with clean melt from the bottom up。 After mould filling， solidification starts from the opposite end of the mould in the direction of the tubezinc die casting。 By increasing the pressure in the casting furnace， good feeding is guaranteed。 Cycle times are long duedie casting machine to the fact that the casting is connected to the big melt volume by the riser tube during solidification。

High pressures die castings

Filling speed and intensification pressure differentiates high-pressure die casting from most other processes。

After liquid metal is transferred to theDie casting shot sleeve the plunger slowly closes to shut off the filling port。

The plunger is then moved towards the die at a controlled but high speed in order to fill the die cavity。

With the potential for highly automated operation， the high-pressure die castingMulti slider die casting machine ( process is capable of extremely high levels of productivity。 HPDC machines are size rated by the closing force。。。

Rubber Gasket-Choosing green wedding rings

Eco-Friendly WedRubber Partsding Rings respect the environment while celebrating love and commitment。 An environmentally friendly wedding ring is one that has no waste resources， contribute to the exploitation of the labor force or have a conflict diamond。

It can be delicious， too。 A family heirloom avoids commercialism， while it honors tradition。 If no suitable heirloom， a vintage ring or real estate also avoids pollution and waste。

A ring made of alternative materials will also avoid the pollution， while celebrating an engagement with some lasting beauty。 Such a ring may be the high-tech materials are produced， or simply made of precious wood。 Here are three ideas for eco-friendly wedding rings。

Heirlooms， antiques and recycled rings

Sometimes a family is offering a few heirloom ring that carries the history and charm。 Ring can sometimes be changed。 Otherwise， re-designed jewelry， will be crafting the metal and stones into rings to hold the additional meaning。

Some couples， family rings restyle several pieces into the mix， which they wear。 Custom twist rings， for example， to connect more than one metal， as they entwine the rings of two families。

Stones can be purchased recycled rings added。 Synthetic gemstones or diamonds from a reputable Canadian mine are alternative possibilities。
Some couples have no suitable family jewelry available， or do not want to change an heirloom。 You can choose from vintage rings available online or from a local jeweler。 Portero is a reliable online portal for real estate jewelry。

Couples buying a vintage ring should check the local jeweler to the Better Business Bureau and the local licensing authority。 Also antique jewelry have assessed if you spend a considerable sum。 Be sure the ring fits well， or can be changed safely。

Choose a durable design。 Large pearls， natural emeralds， opals and not so well bearLike other precious stones。 Some rings with multiple stones have settings that do not stand up to everyday use can。 You choose the ring ofRubber O-Ring life， one you might see one day to wear a grandchild。

Ceramic materials and artificial gemstones

Ceramic rings are attractive and durable。Custom Mold Rubber Parts Such rings range from wonderfully simple to almost baroque。 There are styles for all tastes。
High-tech rings are nothing like China。 They often look like metal。 More dent-resistant and durable than most metals， although it also in black， white， and colors。

Tough ceramic rings are usually proposed groom， but many brides will appeal。 Some are inlaid with wood， metal， carbon fiber or rubber。 They are hypoallergenic， durable and relatively inexpensive。

Such rings can be set with diamond substitutes like cubic zirconia。 Synthetic diamonds， emeralds， sapphires and rubies are also available。 Because they are perfect， plastics can be much more durable than natural gemstones。 Because they areRubber Seal synthetic， they can also be much less expensive。

Wooden Rings

Wood rings， the ultimate environmentally friendly rings。 Some are very simple， others are inlaid with everything from volcanic stone and glass shell。 Many types of wood are made into rings。

Bog oak is oak， which was buried in a peat bog for thousands of years。 Deep color and mellow shine are its properties。 Other hardwoods include teak， red padauk， purple heart and walnut。 Rings are created with embedded designs in turquoise， pearl， and malachite， and precious stones， concrete or metal。

Just as companies make wood rings to order。 Wooden rings are inexpensive and are wonderfully durable。

Couples have many options when it for the environmentally friendlyRubber Gasket wedding rings shop。 With family rings can conserve resources and respect for tradition。 RecyclingThe search for suitable materials or antiques shows respect for the past and for the earth。

Ceramics and similar materials are a hyper-modern approach to the same destination。 Wooden rings are simply lovely alternative。 Wedding rings need not be made of precious metal to be permanent， and they do not contain diamonds to be for ever。

Everything About Touch Screens and Fanless Medical Computers

The most importaAll in one computernt reason for the success of information technology in today´sVideo wall era - computers。 The evolution computers have helped the humankind in many ways。 Today， the most complicated work can be done in a matter of few seconds， all thanks to the computer technology。 We， humans have become very dependent on computers for everything。 Computers have become an integral part ofBox PC our lives and all sectors， be it public or private， or in fact medical sector。

In addition to all this， the introduction of computers in the medical sector has not only made the health care facilities more feasible， but also helped in collecting data easily。 From helping in diagnosing the patients to storing data， medical PCs have come a long way to benefit humans。 If you are a part of the health care facility and are looking topanel PC upgrade infrastructure， then consider the fanless medical computer all in one - not a bad idea at all。

What is so different about these Computers?
We use computers in multiple industries like pharmaceutical， food production， chemical， medical， sales， and more。 There is really no limitation to the power of a computer。 It has been improving our lives and making our jobs a lot easier。 The touch screen PC all in one is meant for max performance on extreme environment conditions。 It can easily withstand water， dirt， extreme hot as well as cold conditions， while not faltering or losing any information in the least bit。 It has actually helped all the industries grow over the years。

This fanless medical computer all in one provides exceptional computing techniques in the toughest surroundings。 It offerssunlight readable the best performance amongst all the computers available in the market today。 It also operates in extreme environmental conditions。 It has a fanless panel that gives a soundproof performance with a simple transition of the pre-existing IT systems。 The slim style offers adigital signage simple transition in the tight work arenas as well。 Therefore， it does not come as aFanless pc surprise that these PCs are made for multiple trade fields。

What the touch screen of a computer does?
The touch screen is well liked for medical functions for its simple ability to show digital graphics and written reports。 The medical trade used these screens for simple access to MRI scans， X-rays， and other types of medical reports。 These touch screen PC all in one has better readabilitytouch screen monitor， reliability， andIP66 consistency for optimum use。 The screen is additionally designed for entering simple information and extraction of data while carrying out serious instructions toIndustrial pc the employees。

The screen is made in such a position that it faces all environmental conditions easily， without cracking or shattering。 It is reliable and trustworthy for long use。 It is also backed by robust computer support。 The average computer screens always support minute readability，Industrial monitor even in obtrusive and harsh light。 Professionals test ad retests these screen to make sure that it is always most productive in extreme environmental conditions。 Therefore， always opt for such all-in-one computers that offer high speed and durability。

sintered metal-Scientists Build a Low-Cost， Open-Source 3-D Metal Printer

OK， so maybe youpowder metal aren´t interested in making your own toys， cellphone cases， or glow-in-the-dark Christmas decorations。 How about a brake drum?
Until now， 3D printing has been a polymer affair， with mostsintered metal people in the maker community using the machines to make all manner of plastic consumer goods， from tent stakes to chess sets。 A new low-cost 3D printer developed by Michigan Technological University´s Joshua Pearce and his team could add hammers to that list。 The detailed plans， software and firmware are all freely available and open-source， meaning anyone can use them to make their own metal 3D printer。

Pearce is the first to admit that his new printer is a work in progress。 So far， the products he and his team have produced are no more intricate than a sprocket。 But that´s because the technology is so raw。 "Similar to the incredible churn in innovation witnessed with open-sourcing of the first RepRap plastic 3D printers， I anticipate rapid progress when the maker community gets their hands on it，" says Pearce， an associate professor of materials science and engineering/electrical and computer engineering。 "Within a month， somebody will make one that´s better than ours， I guarantee it。"

Using under $1，500powder metal worth of materials， including a small commercial MIG welder and an open-source microcontroller， Pearce´s team built a 3D metal printer than can lay down thin layers of steel to form complex geometric objects。 Commercial metal printers are available， but they cost over half a million dollars。

His make-it-yourself metal printer is less expensive than off-the-shelf commercial plastic 3D printers and is affordable enough for home use， he said。 However， because of safety concerns， Pearce suggests that for now it would be better off in the hands of a shop， garage or skilled DIYer， since it requires more safety gear and fire protection equipment than the typical plastic 3D printer。

While metal 3D printing opens new vistas， it also raises anew the specter of homemade firearms。 Some people have already made guns with both commercial metal and plastic 3D printers， with mixed results。 While Pearce admits to some sleepless nights as they developed the metal printer， he also believes that the good to come from all types of distributed manufacturing with 3D printing will far outweigh the dangers。

In previous work， his group has already shown that making products at home with a 3D printer is cheaper for the average American and that printing goods at home is greener than buying commercial goods。

In particular， expanded 3D printing would benefit people in the developing world， who have limited access to manufactured goods， and researchers， who can radically cut costs of scientific equipment to further their science， Pearce said。 "Small and medium-sized enterprises would be able to build parts and equipment quickly and easily using downloadable， free and open-source designs， which could revolutionize the economy for the benefit of the many。"

"I really don´t know if we are mature enough to handle it，" he added cautiously， "but I think that with open-source approach， we are within reach of a Star Trek-like， post-scarcity society， in which ´replicators´ can create a vast array of objects on demand， resulting in wealth for everyone at very little cost。 Pretty soon， we´ll be able to make almost anything。"

Solid Concepts 3D prints world´s first metal gun
3D printing company Solid Concepts has announced that it has 3D printed the world´s first metal gun€"other guns printed using 3D printers have been made of plastic。 Representatives for Solid Concepts say they created the gun to demonstrate how strong and accurate products made using 3D printing technology can be。

Over the past year， reports of guns being printed using relatively inexpensive 3D printers have raised concerns regarding a new way for people to gain access to weapons。 Such concerns have died down， however， as newer reports have pointed out the weaknesses of plastic guns€"they don´t last more than one or two firings。 That´s not the case with the gun printed by Solid Concepts€"engineers there fired their weapon over 50 times， with no apparent problems。

Printing with metal instead of plastic requires a whole new level of printer€"one so expensive that most could not afford to buy or even rent one， thus， news of a printed metal gun isn´t like to spark much if any controversy。 It does however， as the company that printed the gun points out， highlight just how far 3D printing has come。 In this case， the printer uses what is known as a directsintered metal metal laser sintering (DMLS) process€"metal powder is heated to create a type of ink that can be used for printing。 In the past， the process has been used to create surgical implant and aerospace parts。 The newly printed gun， created using blueprints of a real handgun formerly used by the US military， was made by printing almost all of the parts€"it was finished by assembling by hand。 No machining was necessary， just some hand tooling。 The process even included rifling (grooves inside the barrel that cause the bullet to spin as it´s ejected) to ensure accuracy。

Reps for Solid Concepts also note that printing their gun was completely legal€"the company holds a Federal Firearms License。 They add that the metal in their gun has less porosity than poured metal and allows for more complexity than metal that is cut using lasers。 They hope to begin selling hard-to-find gun parts to manufacturers in the very near future。