The Die Castings that are created in this process can vary greatly in size and weight, ranging from a couple ounces to 100 pounds. One common application of die cast parts are housings - thin-walled enclosures, often requiring many ribs and bosses on the interior. Metal housings for a variety of appliances and equipment are often die cast. Several automobile components are also manufactured using Die Casting, including pistons, cylinder heads, and engine blocks. Other common die cast parts include propellers, gears, bushings, pumps, and Valves.
The selection of a material for die casting is based upon several factors including the density, melting point, strength, corrosion resistance, and cost. The material may also affect the part design. For example, the use of zinc, which is a highly ductile metal, can allow for thinner walls and a better surface finish than many other alloys. The material not only determines the properties of the final casting, but also impacts the machine and tooling. Materials with low melting temperatures, such as zinc alloys, can be die cast in a hot chamber machine. However, materials with a higher melting temperature, such as aluminum and copper alloys, require the use of cold chamber machine. The melting temperature also affects the tooling, as a higher temperature will have a greater adverse effect on the life of the dies.
Die Casting Die Casting,Aluminum Die Casting,Die Casting Parts,Zinc Die Casting Ningbo City Yinzhou Ruican Machinery Co.,Ltd , https://www.kstcasting.com
Die casting is a manufacturing process that can produce geometrically complex metal parts through the use of reusable molds, called dies. The die casting process involves the use of a furnace, metal, die casting machine, and die. The metal, typically a non-ferrous alloy such as aluminum or zinc, is melted in the furnace and then injected into the dies in the die casting machine. There are two main types of die casting machines - hot chamber machines (used for alloys with low melting temperatures, such as zinc) and cold chamber machines (used for alloys with high melting temperatures, such as aluminum). The differences between these machines will be detailed in the sections on equipment and tooling. However, in both machines, after the molten metal is injected into the dies, it rapidly cools and solidifies into the final part, called the casting. The steps in this process are described in greater detail in the next section.
Die cast parts can vary greatly in size and therefore require these measures to cover a very large range. As a result, die casting machines are designed to each accommodate a small range of this larger spectrum of values. Sample specifications for several different hot chamber and cold chamber die casting machines are given below.
Type
Clamp force (ton)
Max. shot volume (oz.)
Clamp stroke (in.)
Min. mold thickness (in.)
Platen size (in.)
Hot chamber
100
74
11.8
5.9
25 x 24
Hot chamber
200
116
15.8
9.8
29 x 29
Hot chamber
400
254
21.7
11.8
38 x 38
Cold chamber
100
35
11.8
5.9
23 x 23
Cold chamber
400
166
21.7
11.8
38 x 38
Cold chamber
800
395
30
15.8
55 x 55
Cold chamber
1600
1058
39.4
19.7
74 x 79
Cold chamber
2000
1517
51.2
25.6
83 x 83
Materials
Properties
Aluminum alloys
·Low density
·Good corrosion resistance
·High thermal and electrical conductivity
·High dimensional stability
·Relatively easy to cast
·Requires use of a cold chamber machine
Copper alloys
·High strength and toughness
·High corrosion and wear resistance
·High dimensional stability
·Highest cost
·Low die life due to high melting temperature
·Requires use of a cold chamber machine
Zinc alloys
·High density
·High ductility
·Good impact strength
·Excellent surface smoothness allowing for painting or plating
·Requires such coating due to susceptibility to corrosion
·Easiest to cast
·Can form very thin walls
·Long die life due to low melting point
·Use of a hot chamber machine
Advantages:
·Can produce large parts
·Can form complex shapes
·High strength parts
·Very good surface finish and accuracy
·High production rate
·Low labor cost
·Scrap can be recycled
Sharing agricultural machinery to help the autumn harvest saves time and effort
[ China Agricultural Machinery Industry News ] According to the voice of the Chinese village, "Three Rural China", it is the Mid-Autumn Festival, and the crops around the country have ushered in the harvest season. In the fields, the land is golden, and the fruits are fragrant. "Eleven" small holiday, go to the countryside to turn around, enjoy the autumn high, feel the golden harvest scene, and also a pleasant choice.
In the past few days, the busy figure of the peasants has been seen everywhere in the Daejeon of Kezuoqi Banner in Tongliao City. A corn harvester shuttles back and forth in the ground. Ji Xingcheng, the original seed farmer of the Tongzuo City in Tongliao City, which is busy harvesting in the field, said that this year, his family will not need to hire any more, but he will drive the harvester to collect corn. Corn harvesters are leased from local agricultural machinery cooperatives. The fee of 50 yuan per mu is 20 yuan cheaper than the hired harvester last year.
Ji Xingcheng: Now, the land is 50 yuan, I planted 70 acres of corn, saving seven or eight hundred yuan. This is a lot more convenient. There were very few machines that collected corn in previous years, and now the days of booking with the cooperative have been collected.
According to Jiang Li, the head of the agricultural plant cooperative of the original seed farm in Kezuohouqi, Tongliao City, in July this year, he cooperated with the Marazu e store of Kezuohouqi, and harvested the corn of his cooperative through the network platform “share agricultural machineryâ€. 34 agricultural machinery such as machine, unloaded medicine machine, corn thresher and silage chopper are registered on the network platform. Farmers and herdsmen who need it can rent on the network platform of Mara e shop, or rent directly to the cooperative. Farmers do not need to wait for the external adjustment of the agricultural machinery, so as to avoid the situation where the crops are ruined when the crops are delayed.
Jiang Li: They come, we train them, give farmers free training how to use agricultural machinery and agricultural technology, unconditional service.
Jiang Li calculated the account for the reporter. The working area of ​​a non-medication machine is about 500 mu per day. Before that, the charging standard for each mu of land was 10 yuan. After sharing, only 8 yuan per mu was collected. In this way, farmers can save 1,000 yuan. For Jiang Li, the sharing fee is 20% lower than the previous employment price. However, the number of people who order agricultural machinery is doubled compared to last year, and even the scheduled schedule for no-till planters for spring ploughing next year is full. Jiang Hongliang, the villager of the original seed farm of Kezuohou Banner, Tongliao City:
Jiang Hongliang: There are not so many places. If you buy agricultural machinery, hundreds of thousands of people will have a big burden on ordinary farmers. With such a "shared agricultural machine", it saves time, effort and peace of mind.
During the interview, the reporter learned that most of the agricultural machinery has high prices, short service life, high maintenance costs, etc., and the sales are not good, and it becomes idle kinetic energy. After the “shared agricultural machinery†was launched on the platform, after just over two months, 130 service stations and cooperatives signed an agreement with the Malayan e-shop to promote the sharing of agricultural machinery. Wu Yunna, head of Malayan e-shop network service company:
Wu Yunna: We are online things, new ideas, we are inspired by sharing bicycles, and after hooking up with the Internet, we have received more orders than before, and they are small profits but quick turnover.