Liaocheng Hongfu Pipeline Co., Ltd. provides ductile iron use (ductile iron pipe)
The use of ductile iron:
1: Pressure Pipes and Fittings Ductile Iron Used as Piping When started, iron pipes and fittings are mostly manufactured in major industrial countries. Their manufacture, design, and use comply with both national and international standards and codes of practice (I502531). For transporting water and other liquids, it has long been proved that ductile iron pipes are superior to gray cast iron pipes. The main reason for this transformation is the combination of the strength and toughness of ferritic spheroidal graphite cast iron, which makes the pipes made of this material withstand high operating pressures and can be hauled away when laid. Gas transportation pipelines must be able to withstand the requirements of multiple use strips, ie, excavation and municipal engineering construction and transportation in the vicinity of the pipelines. High-strength, high-cut and simple installation and connection processes of ductile iron pipelines have been demonstrated This material is decisive.
2: Automotive applications As far as the tonnage of production is concerned, the automotive industry is the second user of ductile cast iron castings, the most numerous of which are. Ductile iron is used in three main places in automobiles: (1) power source-an engine component; (2) power transmission-gear train, gear and bushing; (3) vehicle suspension, brake and steering device. The power source crankshaft is a component that withstands continuously varying bending, twisting, and shear loads, and it has to cycle through billions of times during its service life. Automotive design engineers discovered that magnesium was used as early as 19152. After the year, the possibility of using ductile irons was immediately considered. Almost all Ford Motor Company crankshafts are made of this material. Most gasoline engines in the world are equipped with ductile iron crankshafts instead of forged steel crankshafts. This application is considered to be a typical example of value engineering.
Manufacturers of automotive diesel engines have carefully considered the selection of crankshaft materials from the viewpoint of prolonging the service life of the engine. When the high-strength bainite isothermal pyrotechnics is used to increase the power-to-weight ratio, the expanded use of turbochargers affects the According to the design of the material, the temperature of the exhaust pipe equipped with a turbocharger is increased to 500 to 70. C. Under these conditions, oxidation and creep strength become important. The ductile iron with excellent performance is replacing gray cast iron in the exhaust pipe, and as the temperature increases, silicon-alloy ductile iron will be further used.
Automotive power transmission The malleable cast iron parts are sometimes used as the transmission parts of automobiles, and the ductile iron is applied to wafer disc clutches, differential gear boxes, rear axles, wheel housings, and the like. The G. Fiseher foundry in Sehaffhausen, Switzerland, has many applications in this area. They work closely with designers to convert steel castings, forgings and malleable iron castings into ductile iron castings. Suspensions Nowadays, iron is often used as suspension components such as spring hooks and brake system main safety components (brake calipers) and steering knuckles.
3: Agriculture, roads and building applications Modern economic agricultural methods require the provision of reliable and long-lasting agricultural machinery in the required conditions. The ductile iron castings widely used throughout the agricultural industry include various tractor accessories, plough birch, brackets, clamps and pulleys. The typical components are the rear axle housings of agricultural vehicles. 'It originally used steel castings. The road paving and construction industries all require a considerable amount of equipment to be burned, including bulldozers, hammers, cranes and compressors. Ductile iron castings have applications in these areas.
4: General application The ductile iron machine tool industry utilizes the engineering properties of ductile iron, which allows the design of complex machine tool components and castings weighing more than 10. Tons of heavy machine castings. Applications include injection stencils, forging cylinders and pistons. Ductile iron has high tensile strength and yield strength, and has good machinability, allowing the production of lighter castings to maintain rigidity. Also, the strength and toughness of ductile iron make it an ideal material for various hand tools such as wrenches, clamps and gauges.
The paper machine industry utilizes the high strength and high modulus of elasticity of ductile iron. For example, compared with gray cast iron, the ductility of the ductile iron is 60% higher, and the weight can be reduced when the pressure roller and the drying drum are designed. Similarly, ductile iron (suitably added nickel-niobium alloy) rolls are used in steel mills and have higher performance than steel and chilled cast iron.
5: Manufacturers of valve-manufactured valves are the main users of ductile iron (including austenitic ductile iron) and their applications include the successful delivery of various acids, salts, and alkaline liquids.
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Measuring wheel also called mechanical ranging car or digital distance measuring wheel.it is widely used to measuring distance in professional surveying and mapping work,road engineering, landscape planning and design,golf course and lanes ect.
The instruction of digital measuring wheel
Please read this instruction before you use the product
Thanks you for choosing our product. This instrument is a new length measuring instrument, it is easy to use,stable and reliable.
The main features:
You could convert the unit between metric and foot; The data could be stored and extracted; The touch switch of the digital measuring wheel is anti-water; The handle which could adjust the height of the instrument is easy to apply. The wheel wrapped with rubber could help to avoid slipping so that the measuring data is more precise.
1.The main parts (From up to down):
Handle
Data display panel
Battery cover
Handle lock
Measuring wheel
Kickstand
2. Technical data:
A. It could measure up to 99999.9m/ft.
B. Accuracy:+/- 0.3%
C: Minimal display :0.1m
D: Power supply 3V (2xAAA LR003)
E: Suitable temperature for use : -10c°~45c°
3. Button and Operation
CLR: Clearance
SM : Store the data
ON/OFF: Switch
Rm: Extra the data
M/ft: Conversion between metric and foot
Data display panel
Power supply
The stored data
The displayed data
Metric
Foot
1. ON/OFF : Switch.
2. m/ft: it means the conversion between metric and foot. If you select (m), the displayed data is based on metric. If you select (ft) ,the displayed data is based on foot.
3. SM: Store the data. You could save the data that shows on the display panel by pressing this button. It could store 5 records that respectively show on M1, M2,M3, M4, M5.( Refer to Table 1)
Before storing After storing Full of the memory
(Table 1)
4. RM: Extract the stored data from SM. For example, if you have already stored the measuring data 5M as M1, 10M as M2. But now the measuring data is 120.7M, you could press the bottom RM once then the digital display panel will shows the the data of M1. The top right of the display panel shows [R". The data of the digital display panel will return to the present data after two seconds. ( Refer to Table 2). If you press the RM twice, the data of the M2 will show on the display panel, the [R" also is on the top right. The data of the digital display panel will return to the present data again after two seconds.
Present data Press the RM Once After 2 seconds
(Table 2)
Present data Press the RM twice After 2 seconds
(Table 3)
5. CLR: Clearance. Once you press this button, the present data will be deleted.
4.Precautions for use
Please open the handle lock to adjust the suitable height of this instrument at first and then close it before using the instrument. Put away the kickstand and turn on the power. Put the wheel on the road to be measured when the data is 0.0m on the digital display panel. Please press the bottom CLR if you want to delete the present data.
1. Please go straight if you want to measure a straight line to ensure the accuracy of the measurement.
2. Do not measure uneven surfaces because it will reduce the accuracy.
3. Do not measure in the rain for a long time.
4. Do not use the instrument under the high temperature environment or keep this product in the high temperature place.
5. Please open the battery cover by using the cross-head screwdriver and change the battery when the digital display panel is dark.
6. Do not deal with the used batteries by yourself, please send them to the government designated place where to recycle them.
7. Please remove the battery and clean the instrument by use the mild detergent to prevent rust if you haven`t used it for a long time. Then please pack it well and save it in the rough place.
8. Do not use benzene solution to clean the instrument, otherwise its surface will be corroded.
9. Do not use this the instrument as a toy for child for avoiding unnecessary damage.
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