Dongrun Sand Casting

Welcome to Yongkang Dongrun Casting Industry&Trade Company Co,.Ltd

Yongkang Dongrun Casting Industry&Trade Company Co,.Ltd was built in 1995, but we have been in the casting business for more than 14 years. No matter what type of molding you need done, we’re the right supplier for the job. Unlike most of our competition, we offer three types of castings – aluminum sand casting, gravity die casting and aluminum die casting. Our products include automotive parts, railroad parts, medical parts, marine parts, lighting parts, pump body, valve parts, architectural parts and furniture parts.

Our production equipment

Our facilities include eight sets of aluminium die casting equipment ranging from 180T to 1,250T. We have five production lines for large aluminium sand casting jobs up to 500kg/piece and 30 platforms for smaller projects. Four sets of permanent mold/gravity casting machines round out our comprehensive molding capabilities. We can also provide tooling, CNC machining, polishing, plating, heat treatment, pressure test, vacuum Impregnation, assembly and testing for your orders.

Our daily capacity

.Every day we can produce up to 15 tons of aluminum castings..

Contact us
Browse our online showroom to see what we can do for you. And then E-mail us your specifications or inquiries today.

Dongrun Sand Casting Capabilities: Sand Casting, Aluminum Sand Casting, Gravity Die Casting, Aluminum Die Casting

• Key Contact : Leo Wang
• Company Name : Yongkang Dongrun Casting Industry&Trade Co,.Ltd
• Address : Gushan Industry Zone,Yongkang City,Zhejiang Province,China
• Province : Jinhua , Zhejiang
• Zip : 321307
• Telephone : 0086-579-87518177
• Mobile Phone : +86 13857951105
• Fax : 0086-579-87510899
• Email : dongrun@dongruncasting.com
• MSN : Online Chat
• Skype : Online Chat
• Website : http://www.dongruncasting.com

Sand casting Manufacturer

Sand casting is utilized to make large components of iron, Bronze, Brass and Aluminium. Melted metal is poured into a mould cavity made out of sand.

Patterns:
The cavity in the sand is made by utilizing a pattern (a rough duplicate of original) which are generally made of wood and rarely of metal. The cavity is contained in an aggregate housed in a box called the flask. Core is a sand shape put into the mould to produce the inner features of the component like holes or internal passages. Core is put in cavity to form holes of the desired shapes.

Core print is the portion added to pattern core or mould which is utilized to find and support the core within the mould. A riser is an extra cavity made in mould to hold excess molten material. The reason of this is to feed the molten metal to the mould cavity and as metal solidifies and shrinks and therefore, prevents holes in the main casting.

In a two part mould, the upper half is called cope and the lower half is called drag. The parting line separates cope and drag. The drag is filled with sand in part and the core print, the cores and the gating process are put close to the parting line. The cope is then joined to drag and sand is poured covering the pattern, core and the gating system. The sand is made compact by vibration and mechanical method.

After that the cope is separated from drag and the pattern is removed carefully. The purpose is to remove the pattern without breaking the mould cavity. This is facilitated by designing a draft, a slight angular offset from the vertical to vertical surface of the pattern. This is generally of 1° or 1.5 mm (0.060 in) whichever is more. The rougher the surface of design, the more the draft to be given.

Sprues and runners:
The melted material is poured in the pouring cup, it is part of gating process that provides the melted metal to the mould cavity. The vertical part of gating process connected with pouring cup is called sprue and the horizontal part is called the runners and lastly to the multiple points where it connects to the mould cavity is called gates. Alongside there are extensions to the gating process called vents that give the way for built-up gases and the displaced air to vent to the atmosphere.

The cavity is generally made oversize to allow for metal contraction as it cools down to normal temperature. These are linear factors and apply in each direction. These shrinkages for allowance are approximate because the exact allowance is decided by shape and size of casting. Besides different components of casting need separate shrinking allowances.

Sand casting is a way of making rough metal castings utilizing a mould generally made of sand made around a duplicate of the part to be cast that is removed once the sand becomes compact. Castings made this way may be refined by hammer preening, shot preening, polishing forging, plating, rough grinding machining sand castings not refined further are easily recognizable by sand like texture given by the mould. Therefore, the accuracy of part has to be improved by polishing or grinding. And the mould is broken after every casting to take out the part, a fresh mould is to be made for every casting.

Paths for metal pourin during pouring into mould casting are called the runner system and include sprue, various feeders which maintain a good metal ‘feed’ and ‘runners’ and ingates which attach the runner system to cavity. Gas and steam made during casting exit via the permeable sand and riser are added either in the pattern itself or a separate pieces.

OUr Main Products: Sand Casting, Green Sand Casting, Aluminum Sand Casting, Grey Iron Casting, Ductile Iron Casting, Investment Casting,

A Hydraulic cylinder

A Hydraulic cylinder (also called a linear hydraulic motor) is a mechanical actuator that is used to give a linear force through a linear stroke. It has many applications, notably in engineering vehicles.
Hydraulic cylinders get their power from pressurized hydraulic fluid, which is typically oil. The hydraulic cylinder consists of a cylinder barrel, in which a piston connected to a piston rod moves back and forth. The barrel is closed on each end by the cylinder bottom (also called the cap end) and by the cylinder head where the piston rod comes out of the cylinder. The piston has sliding rings and seals. The piston divides the inside of the cylinder in two chambers, the bottom chamber (cap end) and the piston rod side chamber (rod end). The hydraulic pressure acts on the piston to do linear work and motion. Flanges, trunnions, and/or clevisses are mounted to the cylinder body. The piston rod also has mounting attachments to connect the cylinder to the object or machine component that it is pushing.
A hydraulic cylinder is the actuator or "motor" side of this system. The "generator" side of the hydraulic system is the hydraulic pump which brings in a fixed or regulated flow of oil to the bottom side of the hydraulic cylinder, to move the piston rod upwards. The piston pushes the oil in the other chamber back to the reservoir. If we assume that the oil pressure in the piston rod chamber is approximately zero, the force on the piston rod equals the pressure in the cylinder times the piston area (F=PA).
The piston moves instead downwards if oil is pumped into the piston rod side chamber and the oil from the piston area flows back to the reservoir without pressure. The pressure in the piston rod area chamber is (Pull Force) / (piston area - piston rod area).
A hydraulic cylinder consists of the following parts:
Cylinder barrel
Cylinder Bottom or Cap
Cylinder Head
Piston
Piston Rod
Rod Gland
Other parts
A hydraulic cylinder should be used for pushing and pulling only. No bending moments or side loads should be transmitted to the piston rod or the cylinder. For this reason, the ideal connection of a hydraulic cylinder is a single clevis with a spherical ball bearing. This allows the hydraulic actuator to move and allow for any misalignment between the actuator and the load it is pushing.

Related keywords:
Hydraulic Tools, Hydraulic Wrench, Hydraulic Puller

Turbocharger

A turbocharger operates by drawing in an increased amount of air, at a much faster rate allowing a quicker air/fuel mixture ratio. A turbo powered car may be recognisable by a badge placed to the rear boot, for example a TDI (Turbo Diesel Injection) or newly introduced TSI (Twincharger Supercharged Injection) from VW.

Now over to the tech spec side of things, non-mechanically minded people look away! Inside the turbocharger are a compressor and turbine linked together by a shared axis. The turbine inlet receives exhaust gases through the engine exhaust manifold, allowing the turbine wheel to turn around. With the turbine now turning, this then drives the compressor, compressing ambient air and sending it straight to the air intake of the engine. With the air compressed, this allows for the engine to take in a far greater amount of air than normal, thus meaning that with more air added, more fuel can be used too.

It's said that most turbocharger take in 50 percent more air over a standard engine. The typical boost made by a turbo is in around 6 to 8 pounds per square inch. General figures would indicate that a turbocharged engine gives a further 35 percent increase in power over a naturally-aspirated engine, which in lehmans terms means greatly improved performance!

turbocharger in recent years have become a feature associated only to larger high performance cars, however in 2006 Volkswagen stepped to fore by unveiling the all new Golf 1.4TSI engine. Despite being small capacity with a mere 1400cc's, these impressive new engines can blast out in excess of 165bhp, however not only is the TSI engine turbocharged, but supercharged too! The engine has been fitted to the new Golf GT and Sport, boasting performance of 0-100kph in less than 8 seconds. And for the cost conscious among you, its extremely fuel friendly too, doing well in advance of 38MPG! The innovative TSI engine technology is now available in the Golf GT and Sport along with the Golf Plus, Touran SE and Jetta.

Tonglint turbocharger produces and manages various turbocharger, including Turbo Repair Kits, Turbo Thrust Bearings, Compressor wheel, Turbo Piston Ring.

Contact Us

• Key Contact : Richard Gan
• Company Name : Tonglint Industries Co., Ltd.
• Street Address : Habitación 608, Bloque 4, Parque de Ciencia & Tecnología, No. 7 Calle Changjiang, Wuxi, China
• Telephone : 0086-510-85216591
• Fax : 0086-510-85216591
• Email : info@tonglint.com
• Website : http://www.china-turbocharger.com

Aluminum case

A laptop is a very delicate instrument that has to be taken care of when traveling, and this is the reason people use laptop cases. One of the sturdier laptop cases is the aluminum laptop case. In fact, it is often considered a Fort Knox for your portable computer. Actually, a few years ago, owning an aluminum laptop case was quite difficult, as there were not many cases in production. However, nowadays the cost has shrunk drastically, while its availability has increased tenfold. So many people are opting for aluminum laptop cases.

An aluminum case is of course made of aluminum, sometimes with extruded aluminum frames. Most of the aluminum laptop cases come with grey ABS plastic pads on their bottoms to keep them from scratching desks. The handle of an aluminum laptop case is sturdy, with a comfortable molded plastic grip and a removable shoulder strap. For the safety of the laptop, the aluminum laptop cases usually have one or two combination locks. The inside of an aluminum laptop case has a lining with mesh and vinyl leather-look trim, some padded divider panels to separate the laptop from accessories, and also lots of pockets to hold necessary cables and discs. To keep the laptop fitted snugly into the aluminum laptop case, the bottom of the case has totally customizable Velcro-adjustable dividers.

The advantage of using an aluminum laptop case is that it gets reduced shipping costs in the event of shipping of the laptop. It is easy to handle in all weather, as it is both water- and dust-resistant. There is little risk of the laptop getting damaged if the aluminum laptop case falls. aluminum laptop case are recyclable, and are thus beneficial to the environment.

Fenghui Aluminum case produces and manages various aluminum cases, including Aluminum Case,
Aluminium Case, Alu Case, Aluminum Tool Case, Aluminum Alloy Case, Aluminum Box,
Aluminum Case Manufacturer.

Contact Us:

• Key Contact : Vince Zhang
• Company Name : Ninghai Fenghui Aluminum Case Co., Ltd.
• Street Address : Meilin Industry Zone, Ninghai County,Ningbo City,Zhejiang Province
• Telephone : 0086-574-65355768
• Mobile Phone : 15867375719
• Fax : 0086-574-65351705
• Email : info@aluminium-case.cn
• Website : http://www.aluminium-case.cn

SUOFEI is a professional manufacturer in high pressure die casting aluminum radiators

Die cast aluminum radiator:
SUOFEI is a professional manufacturer in high pressure die casting aluminum radiators.
The die-cast aluminum radiator use ADC12 aluminium which is the special anti-friction and anti-erosion material for die-casting.
The die cast aluminum radiator is produced by 800T automatic pressure die-casting machines and can one time integrated shape. It is high endurance. The working pressure reaches 1.0-2.0Mpa and the test pressure reaches 3.0Mpa.
Using homogeneous-material welding technique.
Electrostatic epoxy-coated and twice baked in 200oC, the products have smooth, long-lasting and bright surface.
The complete test system ensure the products' safety and reliability.
The products have good thermal conductivity and the style is simple, good-looking, light and convenient to install, succeeding to European best technique in radiator producing.

Bimetal radiator

UOFEI is a professional manufacturer in high pressure die casting aluminum radiators.
The Bimetal radiator use ADC12 aluminium which is the special anti-friction and anti-erosion material for die-casting and a steel pipe inside.
The Bimetal radiator is produced by 800T automatic pressure die-casting machines and can one time integrated shape. It is high endurance.
Using homogeneous-material welding technique.
Electrostatic epoxy-coated and twice baked in 200oC, the products have smooth, long-lasting and bright surface. Smoke Detector
The complete test system ensure the products' safety and reliability.
The products have good thermal conductivity and the style is simple, good-looking, light and convenient to install, succeeding to European best technique in radiator producing.

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Ball Bearings, EMQ Bearings

Bearings Manufacturers Directory including ball bearings, Auto bearings, roller bearings, thrust bearings.etc.

Bearings Suppliers Directory including Automotive Bearings, Ball Bearings, EMQ Bearings, High Precision Bearings, Linear Montion Bearings, Needle Bearings, Roller Bearings, Self-lubricating Bearings, Sleeve Bearings, Special, Non-standard Bearings, Spherical Bearings, Spherical Plain Bearings, Thrust Bearings.

Types of Bearings

Bearings are relatively small components placed between moving parts to reduce friction with movement. They can be made of many different materials and can be of various sizes and designs. Bearings are used in various applications; they can be found in engines, assembly lines, fans, hand tools, and roller-skates.

There are two classifications for bearings: linear and rotary. These classifications are based on the motions for which they are designed. A linear bearing moves in a straight line and is used for pushing and pulling motions, like a drawer opening and shutting. A rotary bearing is designed for radial motion, like that of a wheel spinning. Rotary bearings are also commonly referred to as thrust bearings.

Bearings are usually small enough to hold in the palm of a hand, but they can be as large as ten feet in diameter. Bearings this large are used in places like hydroelectric power plants. Ball bearings have been used for many years, and their low cost ensures that they will continue to be used in the future.

Types of Bearings

Angular Contact Ball Bearings are a type of radial bearing that are designed so that the contact angle between the races and the balls is created when the bearing is in use.

Automotive Bearings describe many types of bearings used for automotive purposes.

ABEC Bearings are also sometimes called Precision Bearings; these bearings are rated on a scale from 1 to 9 based on precision standards.

Bearings are components that are used in between moving parts.

Ceramic Bearings are made of steel rings and ceramic balls (instead of steel).

Counter bored ball bearings have one race shoulder turned and ground away to facilitate an assembly with a greater number of balls. Can also be a non-separable Ball Bearings with one side of the raceway removed from either or both rings to assist manufacturing assembly; normally the outer ring is counterbored.

Deep Groove Ball Bearings are a type of radial bearing that have a cage assembly, which separates the balls and is used for radial and axial loads.

Linear Montion Bearings move objects that need only be moved in one direction and possibly back to an original position. (Linear Bearings)

Maximum capacity bearings allow for more balls to be loaded into the bearing using the filling notches.

Miniature Ball Bearings are a smaller bearing, typically under 10mm bores. A single row style of bearing capable of handling smaller torque loads.

Precision Bearings are composed of materials that are subjected to severe stress reversals.

Axial and Radial Ball Bearings move in both directions and can handle large loads. The most widely used and recognizable ball bearing.

Roller Bearings can handle higher load capacities than standard ball bearings. These consist of cylindrical rollers as the motion component of the bearing..

Self-aligning Ball Bearings consist of two rows of balls and a spherical raceway in the outer ring. These bearings are known for limited problems with misalignment.

Skate bearings are used for inline skates and skateboards. These utilize balls as the motion component for the bearing.

Steel ball bearings are made of steel materials.

Thrust Bearings are designed to handle just thrust and minimum amounts of it, such as in the case of a Lazy Susan or Barstool.

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