Investment Casting can make use of most metals, most commonly using steel alloys, carbon steel,stainless steel, and tool steel. This process is beneficial for casting metals with high melting temperatures that can not be molded in plaster or metal. Parts that are typically made by investment casting include those with complex geometry such as turbine blades or firearm components. High temperature applications are also common, which includes parts for the automotive, aircraft, and military industries. Investment Casting Investment Casting,Investment Casting Materials,Impeller Investment Casting,Wax Investment Casting Ningbo City Yinzhou Ruican Machinery Co.,Ltd , https://www.kstcasting.com
Our products cover a wide range of industries including train & Railway, automobile & Truck, construction machinery, mining machinery, forklift, agricultural machinery, shipbuilding, petroleum machinery, construction, valve and pumps, electric machine, hardware, power equipment and so on. We are capable to produce products according to customers' drawings or samples, we focus on both carbon steel and alloy steel. Up to today, more than 100 raw materials and 5, 000 kinds of different products have been developed and produced by us. We are familiar with the material standards of many countries, such as Chinese GB, American ASTM, AISI, German DIN, French NF, Japanese JIS, British BS, Australian AS and Association of American Railroads (AAR ) and other industrial standards.
The process is generally used for small castings, but has produced complete aircraft door frames, steel castings of up to 3 tons and aluminium castings of up to 100 kg. It is generally more expensive per unit than Die Casting or sand casting but with lower equipment cost. It can produce complicated shapes that would be difficult or impossible with die casting, yet like that process, it requires little surface finishing and only minor machining.
Investment casting is used in the aerospace and power generation industries to produce turbine blades with complex shapes or cooling systems. Blades produced by investment casting can include single-crystal (SX), directionally solidified (DS), or conventional equiaxed blades. It is also widely used by firearms manufacturers to fabricate firearm receivers, triggers, hammers, and other precision parts at low cost. Other industries that use standard investment-cast parts include military, medical, commercial and automotive.
Investment casting offers high production rates, particularly for small or highly complex components, and extremely good surface finish (CT4-CT6 class accuracy and Ra1.6-6.3 surface roughness) with very little machining. The drawbacks include the specialized equipment, costly refractories and binders, many operations to make a mold, and occasional minute defects.
Material:
Alloy Steel:ASTM 430;ASTM410;ASTM 416,ect.Carbon
Steel:WCB,AISI1020;AISI1045;S355J2G3,S235JR,ect.
Stainless Steel:SS304;SS316;SS316L;17-4 PH;ect.Copper:C21000;C26800;C27000;C27200,ect.
Advantage
Can form complex shapes and fine details Many material optionsHigh strength partsVery good surface finish and accuracyLittle need for secondary machining
Applications:
Turbine blades, armament parts, pipe fittings, Lock Parts, handtools, agriculture parts,marine parts,medical parts,hardware,automobile parts,ect.
What is the operating characteristic of a gasoline generator?
What is the operating characteristic of a gasoline generator?
Gasoline generators consist of two major institutions and five major systems. The two major mechanisms include a crank linkage mechanism and a gas distribution mechanism. The five major systems include a fuel supply system, a lubrication system, a cooling system, an ignition system, and a starting system. The main function of the crank linkage mechanism is to convert the reciprocating linear motion of the piston into a rotational motion of the crankshaft and output it. The crankshaft is arranged by the main shaft and the connecting rod shaft. The main shaft is used to support the crankshaft, and the connecting rod shaft and the connecting rod are connected by a sliding bearing. When the crankshaft is installed, there is a requirement for its axial clearance so as to avoid axial turbulence in the working process. One end of the connecting rod is connected with the connecting rod shaft and one end is connected with the piston (sliding bearing connection). An oil retaining ring groove is formed on the piston head near the connecting rod portion, and a gas retaining ring groove is opened away from the connecting rod portion to separate the sleeve and the gas on both sides of the piston. The main part of the internal combustion engine to achieve the work cycle and complete the work process is the crank connecting rod mechanism. During the power stroke, the connecting rod converts the linear motion of the piston due to the pressure of the gas to the rotational motion of the crankshaft, and the final power is output through the crankshaft. The flywheel releases energy during intake, compression, and exhaust of the gasoline generator, which in turn converts the rotational motion of the crankshaft into a piston. Linear motion.
The function of the gas distribution mechanism is to periodically open and close the intake and exhaust Valves according to the working sequence and work process of the engine, so that the combustible mixture or air enters the gas and the exhaust gas is discharged from the gas rainbow to achieve the ventilation process. . The air distribution mechanism consists of timing gears, peach-shaped shafts, piston push rods (with adjustment nuts on it), rocker arm shafts, rocker arms, valves, valve return springs, and valve seats. The timing gear rotates the peach-shaped shaft. The eccentric wheel on the peach-shaped shaft is arranged in different phases and corresponds to the phase of the crankshaft motion. The peach-shaped shaft pushes the piston push rod, and the piston push rod pushes one end of the rocker arm, so that the other end of the rocker arm presses down the valve and the valve return spring, so that the valve is opened, the oil is taken in or discharged, and the piston is pushed away from the rocker arm. Reset under the action of the return valve, valve closed.
To make the engine transition from the static state to the working state, the crankshaft of the engine must be turned with an external force first to make the piston reciprocate. The combustible mixture in the air is burned and expanded to work, and the piston is driven downward to rotate the crankshaft. The engine can run on its own and the work cycle can be performed automatically. Therefore, the crankshaft starts to rotate under the action of an external force until the engine starts to idle automatically, which is called starting of the engine. The device required to complete the start-up process is called the starting system of the engine.
The function of the lubrication system is to deliver a quantitative amount of lubricant to the surface of the part that is moving relatively to achieve liquid friction, reduce frictional resistance, and reduce wear of the machine. The parts surface is cleaned and cooled. Lubrication systems are usually composed of lubricating oil channels, oil pumps, oil filters, and some valves. Lubrication system is the key to ensure the normal operation of the engine and is directly related to the life and operating conditions of the engine. The lubrication method of the piston is oil splash lubrication. The function of the gasoline engine fuel supply system is to formulate a mixture of a certain amount and concentration to supply the gas according to the requirements of the engine, and discharge the burned exhaust gas from the gas rainbow to the atmosphere. The function of the diesel fuel supply system is to supply diesel and air into the air rainbow respectively, form a mixed gas in the combustion chamber and burn, and finally exhaust the burned exhaust gas.
The function of the cooling system is to dissipate some of the heat absorbed by the heated parts in time to ensure that the engine works at the optimum temperature. The cooling system of a water-cooled engine is usually composed of a cooling water jacket, a water dish, a fan, a water tank, a thermostat, and the like.
In gasoline generators, the combustible gas mixture in the air gyro is ignited by electric sparks. For this purpose, a spark plug is mounted on the gas valve cover of the gasoline engine, and the head of the spark plug extends into the combustion chamber. All equipment capable of generating electric sparks between spark plug electrodes on time is called an ignition system. The ignition system is usually composed of a battery, a generator, a distributor, an ignition coil, and a spark plug.
From this it can be seen that the gasoline engine has periodic work, so he is sending off intermittent energy. Without continuity, the gasoline generator's air intake volume can only be changed when the gasoline engine draws in air. Gasoline generators have a set of parameters to reflect their operating performance. These parameters include torque, excess air ratio, throttle opening, effective power, temperature, and crankshaft angular velocity. If no matter how the gasoline generator operating conditions change, these parameters can remain constant, which is the ideal state of gasoline generators. But this kind of situation is very difficult to appear under the realistic condition, because can only appear when the output energy of gasoline generator and load consumption energy are totally equal.