Active Member
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[China]
Address: Rm 704, Building 2, No.3, Leading tower, Guangqumen Nei,Dongchen District, Beijing, China
Contact name:Helen Ren
Sumer (Beijing) International Trading Co., Ltd. |
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Main information:
Product name:ZAMAK COFFIN HANDLE
Model: H039
Brand: B&R
Application: European style coffin
Origin: China
Manufacturer: Sumer International (Beijing) Trading Co.,Ltd
Product detail:
Size: 20*7.5cm
Material: Zamak (Zinc alloy)
Color: Gold, Silver or Bronze (Optional)
Attached on coffin by bolt
MOQ:1000 pcs
Main feature:
Professionally engaged in funeral field over 10 years;
Customized products acceptable;
Good quality and competitive price;
More Information:
Zamak
Zinc Mining
80% of zinc mines are located underground, 8% are of the open pit
type, with the remainder a combination of both. In terms of
production volume, underground mines account for as much as 64% of
overall zinc production, combined underground/open pit mines
provide 21%, and the remaining 15% is sourced from open pit mines.
Rarely is the ore, as mined, rich enough to be used directly by
smelters; it needs to be concentrated. Zinc ores contain 5-15%
zinc. To concentrate the ore it is first crushed and then ground to
enable optimal separation from the other minerals. Typically, a
zinc concentrate contains about 55% of zinc with some copper, lead
and iron. Zinc concentration is usually done at the mine site to
keep transport costs to smelters as low as possible.
Roasting & Sintering
Over 95% of the world’s zinc is produced from zinc blende (ZnS).
Apart from zinc, the concentrate contains some 25-30% or more
sulfur as well as different amounts of iron, lead and silver and
other minerals. Before metallic zinc can be recovered, by using
either hydrometallurgical or pyrometallurgical techniques, sulfur
in the concentrate must be removed, which is done by roasting or
sintering. The concentrate is brought to a temperature of more than
900°C where zinc sulfide (ZnS) converts into the more active zinc
oxide (ZnO). At the same time sulfur reacts with oxygen giving out
sulfur dioxide which subsequently is converted to sulfuric acid –
an important commercial by-product.
Zamak 7
Zamak 7 has less magnesium than zamak 3 to increase fluidity and ductility, which is especially useful when casting thin wall components. In order to reduce inter-granular corrosion a small amount of nickel is added and impurities are more strictly controlled.
Zamak 7 composition per standard
| Alloying elements | Impurities | |||||||||||
| Standard | Limit | Al | Cu† | Mg | Pb | Cd | Sn | Fe | Ni‡ | Si | In | Tl |
| ASTM B240 (Ingot) | min | 3.9 | - | 0.01 | - | - | - | - | - | - | - | - |
| max | 4.3 | 0.1 | 0.02 | 0.002 | 0.002 | 0.001 | 0.075 | - | - | - | - | |
| ASTM B86 (Cast) | min | 3.5 | - | 0.005 | - | - | - | - | 0.005 | - | - | - |
| max | 4.3 | 0.25 | 0.02 | 0.003 | 0.002 | 0.001 | 0.075 | 0.02 | - | - | - | |
| GB8738-88 | min | 3.9 | - | 0.01 | - | - | - | - | 0.005 | - | - | - |
| max | 4.3 | 0.1 | 0.02 | 0.002 | 0.002 | 0.001 | 0.075 | 0.02 | - | - | - | |
| †Impurity ‡Alloying element | ||||||||||||
More Picture:
H039 zamak coffinhandle
Attached on coffin by bolt
