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March 13, 2020
Cast Bronze Bushings with Solid Lubricant Inserts，Bronze Bearing & Bushing Casting Process，Centrifugal casting continuous casting bronze technological proces.
Material Production process,bronze graphite bearings casting process
cast bronze graphite plugged oiles bearing provide a maintenance free bearing solution, particularly for high load, intermittent of oscillating motion.Graphite plugged oiles bearing is made of cast bronze alloy base material with special solid lubricants plugged. The base metal withstands high load and the graphite provide self-lubrication. This type of oiles bearing shows excellent performance without pre-lubrication under conditions of extreme high/low temperature with low speed.
Continuous casting is an advanced method of casting in which molten metal is continuously poured into a special metal mold called a mold. The solidified (encased) casting is continuously pulled out from the other end of the mold.The development of continuous casting is an important means to optimize the structure of China's metallurgical industry, which will fundamentally change the low efficiency and high consumption of China's metal material production, and promote the development of product structure to the direction of specialization.The development of advanced continuous casting technologies, such as near-final continuous casting, single crystal continuous casting, high-efficiency continuous casting and hot charging of continuous casting billet, will be very active, and will promote the development of a series of new materials.
Centrifugal casting is a technique and method of pouring liquid metal into a rapidly rotating mold to fill the mold and form a casting.Because of the centrifugal motion, the liquid metal can fill the mold well in the radial direction and form the free surface of the casting.Cylindrical inner hole can be obtained without core.Helps to remove gases and inclusions from liquid metals.Affect the crystallization process of metal, thus improving the mechanical and physical properties of castings.
Applications where it is difficult to add oil / grease lubricants
Heavy loads and low speed
l Bearing forms made to order:
l Straight Bushings
l Flange Bushings
l Wear Plates
l Thrust Washer
l Bronze no Graphite
l Bronze w/Graphite
l Custom Bushing:Special parts according to ISO, DIN or customer design, special alloys.
Self lubricating bushings used in die sets, metal stamping dies, molds, special machines and heavy equipment of all types.
Cast bronze bearings are self-lubricating plain bearings manufactured by us. The basic principle of Cast bronze bearings is a high performance solid lubrication product with graphite and MoS2 composite solid lubricants embedded in a metal matrix. It breaks through the general bearing lubrication by oil film limitations. In the process of use, through the friction heat to make the solid lubricant and the shaft friction, the formation of oil, powder coexistence lubrication excellent conditions, not only the preservation of the guard shaft does not wear, and make the solid lubrication characteristics eternal. Its hardness is higher than average copper sleeve one times, wear-resisting property is also one times. At present, it has been widely used in metallurgy continuous casting machine, train support, steel rolling equipment, mining machinery, ships, gas turbines and other high temperature, high load, low speed heavy load and other occasions.
First, we introduce the two most common types of casting process for copper sleeve bearing. They are sand casting, centrifugal casting and continuous casting.
(1) centrifugal casting: it is a casting method of solidifying by pouring metal liquid into the rotating mold and filling the mold with centrifugal force. Process flow: process characteristics advantages: 1. There is almost no metal consumption of pouring system and riser system, so as to improve process output rate; 2. 2. Hollow castings can be produced without core, so the metal filling capacity can be greatly improved in the production of long tubular castings; 3. High casting density, few defects such as porosity and slag inclusion, and high mechanical properties; 4. It is convenient to manufacture composite metal castings of cylinder and sleeve. Disadvantages: 1. There are certain limitations in the production of special-shaped castings; 2. The casting inner hole diameter is inaccurate, the surface of the inner hole is rough, the quality is poor, and the machining allowance is large; 3. Casting is easy to produce specific gravity segregation. Application: centrifugal casting was first used in the production of cast pipes. Centrifugal casting technology is used in metallurgy, mining, transportation, irrigation and drainage machinery, aviation, national defense, automobile and other industries at home and abroad to produce steel, iron and non-iron carbon alloy castings. Among them, centrifugal cast iron pipe, internal-combustion engine cylinder liner and axle sleeve are the most popular castings.
Continuous casting: an advanced method of casting in which molten metal is continuously poured into a special metal mold called a mold. A solidified (encased) casting is continuously pulled out of the mold to obtain a casting of any length or a specific length. 1. Because the metal is cooled rapidly, the crystal is dense, the structure is uniform, and the mechanical properties are good; 2. Save metal and increase yield; 3, simplify the process, eliminate the modeling and other processes, thus reducing the labor intensity; The production area required is also greatly reduced; 4, continuous casting production is easy to achieve mechanization and automation, improve production efficiency. Application: the continuous casting method can be used to cast steel, iron, copper alloy, aluminum alloy, magnesium alloy and other long castings with the same section shape, such as ingot, slab, bar, tube, etc.
The best way to determine which casting method is best for your project is to consult one of our experienced sales engineers. They will study each factor relevant to your project and recommend casting methods for copper sleeves, axles, and components for your individual needs. To contact one of our sales engineers, click the link below. Contact our sales engineer.
|Coefficient o linear expansion||1.9×10-5/℃||1.8×10-5/℃||1.6×10-5/℃||0.8×10-5/℃||1.8×10-5/℃|
|Compression deformation||< 0.01 mm||< 0.05mm||< 0.04mm||< 0.05mm|
VIIPLUS company by CHINA's national standard can not only implement copper alloy graphite self-lubricating bushings copper material production, can also according to the United States, the European Union, Japan and other countries standards for copper set of production, but also according to customer special requirements for the development of the copper alloy materials, VIIPLUS CHINA company can also according to customer's drawings in the production of precision of finished parts.