Sand Casting Flask For Green Sand Casting Line Foundry Flask ( cope and drag) for clay sand molding machine
- Category: Metal Casting Machinery >>>
- Supplier: Qingdao Huaxin Shengye Casting Machinery Co. Ltd.
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Product Overview
Description
Product Description
Metal Casting Flask
Green sand process
Green sand is an aggregate of sand, bentonite clay, pulverized coal and water. Its principal use is in making molds for metal casting. The largest portion of the aggregate is always sand, which can be either silica or olivine. There are many recipes for the proportion of clay, but they all strike different balances between moldability, surface finish, and ability of the hot molten metal to degas. The coal, typically referred to in foundries as sea-coal, which is present at a ratio of less than 5%, partially combusts in the surface of the molten metal leading to offgassing of organic vapors.
Sand casting is one of the earliest forms of casting practiced due to the simplicity of materials involved. It still remains one of the cheapest ways to cast metals because of that same simplicity. Other methods of casting, such as those using shell molds, boast higher quality of surface finish, but higher cost.
Green sand (like other casting sands) is usually housed in what casters refer to as casting flasks, which are nothing other than boxes without a bottom or lid. The box is split into two halves which are stacked together in use. The halves are referred to as the top (cope) and bottom (drag) flask respectively.
Not all Green sand is green in color. But considered "green" as in the sense that it is used in a wet state (akin to green wood). An alternative casting method is to heat-dry the molded sand before pouring the molten metal. This dry sand casting process results in a more rigid mold better suited to heavier castings. Unlike the name suggests, "green sand" is not a type of sand on its own, but is rather a mixture of:
silica sand (SiO2),
chromite sand (FeCr2O4), or zircon sand (ZrSiO4), 75 to 85%, sometimes with a proportion of olivine, staurolite, or graphite.
bentonite (clay), 5 to 11%
water, 2 to 4%
inert sludge 3 to 5%
anthracite (0 to 1%)
Sand casting is one of the earliest forms of casting practiced due to the simplicity of materials involved. It still remains one of the cheapest ways to cast metals because of that same simplicity. Other methods of casting, such as those using shell molds, boast higher quality of surface finish, but higher cost.
Green sand (like other casting sands) is usually housed in what casters refer to as casting flasks, which are nothing other than boxes without a bottom or lid. The box is split into two halves which are stacked together in use. The halves are referred to as the top (cope) and bottom (drag) flask respectively.
Not all Green sand is green in color. But considered "green" as in the sense that it is used in a wet state (akin to green wood). An alternative casting method is to heat-dry the molded sand before pouring the molten metal. This dry sand casting process results in a more rigid mold better suited to heavier castings. Unlike the name suggests, "green sand" is not a type of sand on its own, but is rather a mixture of:
silica sand (SiO2),
chromite sand (FeCr2O4), or zircon sand (ZrSiO4), 75 to 85%, sometimes with a proportion of olivine, staurolite, or graphite.
bentonite (clay), 5 to 11%
water, 2 to 4%
inert sludge 3 to 5%
anthracite (0 to 1%)
Detailed Images
flask and transfer car are the parts of molding line
Metal Casting Flask
Size Information
Size Chart of Foundry sand molding machine
Recommended Foundry machinery (Core shooter machine , shot blasting machine and casting line)
iten no. | Z143W | Z145W | Z146W | Z147W | Z148WB | Z148WK | Z149WK |
working table size (mm) | 560X420 | 600X550 | 700X550 | 800X575 | 900X730 | 1200X730 | 1200X1030 |
Compressed air consumption | 0.25M3 | 0.4M3 | 0.4M3 | 0.4M3 | 0.6M3 | 0.6M3 | 0.6M3 |
Packing&Shipping
Foundry sand casting Jolt squeeze molding machines are packed export standard packing.
Company Introduction
Since its founding in 1998 as Qingdao Huaxin Group, the mission of qingdao huaxin group has been to develop the most innovative solutions possible for the automation of green sand moulding, sand core making machine, sand preparation and shot blasting processes throughout the foundry industry. Continuous technological improvement and innovation have earned nearly 20 intellectual property rights in China. Today, with nearly 5,000 sand moulding machines and shot blasting systems installed around the world, and its sales and service operations are spread all over the world.
Our single focus is, has always been, and will always be the foundry industry.
Qingdao Huaxin Group has over 20 years history In China. It is located in Binhai Industrial Park, Huangdao Area, Qingdao city, China. It is covered an area of sixty-six thousand six hundred and sixty-seven Square meters. We have produced foundry machines more than 1000 types, so we have rich experience in sand casting production machines.
The casting production line is Automatic horizontal static pressure molding line, Auto shell molding line, Furan resin sand automatic molding line, Green sandl processing production line(Sand Preparation); the newest patent machine-continuous sand mixer, pouring machine, popular standard machine are Jolt squeeze molding machine, pneumatic multi-piston molding machine, all kinds of cold core / hot core box core shooting machine, various shot blasting machines. We provide excellent supporting equipment and services for China's foundry, shipbuilding, automobile, military, locomotive, machine tool and other industries. We design and manufacture various non-standard special casting machines according to user needs.
Our Services & Strength
1. Qingdao Huaxin Company has more than 20 years of production experience in casting equipment.
2. Semi-automatic pneumatic molding machine, multi-contact molding machine full-automatic static pressure molding production line
3. There are also core shooting machines, shot blasting machines, sand processing equipment and other casting production lines designed by the company itself.
4. The company has excellent research and development equipment team, mature sales and after-sales service team, and professional service for each user.
1.According to different casting foundry equipments , qingdao huaxin company is divided into different professional after-sales teams.
2.The after-sales team of the foundry sand molding machine directly contacted the technical department to instruct the users how to install and use the molding machine.
3.Visit users regularly to learn about their usage.
4.Regular mailing of accessories to users, timely guidance to replace accessories.
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