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Sand casting, the most widely used casting process, utilizes expendable sand molds to form complex metal parts that can be made of nearly any alloy. Because the sand mold must be destroyed in order to remove the part, called the casting, sand casting typically has a low production rate. The sand casting process involves the use of a furnace, metal, pattern, and sand mold. The metal is melted in the furnace and then ladled and poured into the cavity of the sand mold, which is formed by the pattern. The sand mold separates along a parting line and the solidified casting can be removed. The steps in this process are described in greater detail in the next section. In sand casting, the primary piece of equipment is the mold, which contains several components. The mold is divided into two halves – the cope (upper half) and the drag (bottom half), which meet along a parting line. Both mold halves are contained inside a box, called a flask, which itself is divided along this parting line. The mold cavity is formed by packing sand around the pattern in each half of the flask. The sand can be packed by hand, but machines that use pressure or impact ensure even packing of the sand and require far less time, thus increasing the production rate. After the sand has been packed and the pattern is removed, a cavity will remain that forms the external shape of the casting. Some internal surfaces of the casting may be formed by cores.

Sand casting is used to produce a wide variety of metal components with complex geometries. These parts can vary greatly in size and weight, ranging from a couple ounces to several tons. Some smaller sand cast parts include components as gears, pulleys, crankshafts, connecting rods, and propellers. Larger applications include housings for large equipment and heavy machine bases. Sand casting is also common in producing automobile components, such as engine blocks, engine manifolds, cylinder heads, and transmission cases.

Sand casting is able to make use of almost any alloy. An advantage of sand casting is the ability to cast materials with high melting temperatures, including steel, nickel, and titanium. The four most common materials that are used in sand casting are shown below, along with their melting temperatures.

DC Operated Standalone Fixed Temperature Heat Alarm (heat sensor, fire  detector)

Operated with single 9V DC block battery

1. Sensitive only to a fixed temperature
2. Less nuisance alarms due to contamination, dust, and insects
3. With wall mount plate set for easy installation
4. LED operation indicator
5. Low battery warning indicator
6. Self-test button
7. CE and FCC approved, Compliant with the EN54 standard, BV ISO 9001:2000

Ceiling or wall mounting
Gives loud 85dB alarm sound.
Humidity:10﹪~85﹪
Potential early fire detect and auto alarm;
Temperature trigger: 55±5℃;
Operation ambient: 0~60℃
9V battery included 
Product size: 107*107*37.5mm  
Box Size:125mm x 110mm x 55mm
Weight:0.22kg
Carton size: 57.5cmx27cmx30cm   50pcs/ctn
GW/NW: 11kgs/12kgs 

Conventional Heat Detector

 Portable gas detector  

 Carbon Monoxide detector .

 Smoke detector .

Our company specialize in Winch,ATV Winch,Electric Winch,Auto Winch,Power Winch,Hand Winch.Our products are widely accepted both by overseas customers and domestic trading companies, being exported globally.To be a car accessory, electric winches is use to save the vehicle itself when it is in badly condition such as in the snowfield, desert or muddy road. A. Winches on ATV’s If you ask any ATV enthusiast they are sure to tell you stories of getting into a precarious spot or into a deep mud-hole and not being able to get the ATV unstuck or out of the potentially dangerous position. Most of these same enthusiasts will tell you that their ATV winch saved the day. With most of the newer ATVs the ATV winch can mount to either the front or the back of the ATV and in some instances can be moved from front to back depending on the need. ATV winches come in a variety of strengths and can be used for nearly any purpose. Booster cable The size of the winch you chose to put on your ATV depends greatly on how the ATV is operated and the size of the ATV itself. Regardless of the size chosen, ATV winches are a must have for a true outdoor ATV enthusiast. B. Winches for trucks It used to be that the only trucks that had winches were tow trucks. Not today. Today, winches are found a large number of three quarter and one ton trucks. Back when winches were first becoming popular, they often were hand cranked winches. Today, the majority of winches on trucks are electric winches. An electric winch hooks up to the battery of the truck and is operated via a remote control. Electric winches are extremely helpful when the truck is in a situation where it is likely to be slipping and sliding and having to hand crank the winch in would be dangerous. An electric winch is also useful on larger trucks that would be nearly impossible to hand crank. On a large truck such as an F-350, the stronger the winch the better. Most people who put winches on their large trucks use a winch rated for at least 12,000 pounds. C. Winches for Trailers Not only do trucks and ATVs have winches, but many trailers today come with a winch. Trailer winches can be electronic or hand crank. It is common to find trailer winches on most boat trailers and some rvs. Most people can recall loading a boat onto a trailer and using the hand cranked trailer winch to pull the boat onto the trailer and secure the boat into place. The boat owner almost always got wet while reeling in his boat. Today, there are trailer winches in a variety of strengths and horsepower that are electronic and will pull the boat onto the trailer with just the push of a button. These electronic trailer winches have made the process of loading and unloading boats much simpler. Electric winch is apply for material hoisting in construction and it is the special hoisting machine for derrick,longmen rack

Booster Cable B1  Booster Cable B2