NEWS
2021-04-06
The excellent performance and characteristics of graphite copper bushings
Mold guide posts are used in conjunction with components within the mold to ensure smooth movement and precise guidance of the mold’s travel. Standard graphite‑copper bushings are made from SUJ2 material, offering high hardness, excellent wear resistance, and superior interchangeability, thereby meeting the production requirements of a wide range of molds. A unique heat‑treatment process and imported semi‑automatic machining equipment significantly shorten the production cycle while effectively enhancing the quality of mold guide posts. Graphite‑copper bushings are primarily composed of high‑strength copper alloys—also known as JDB solid‑inlaid self‑lubricating bearings. So, what are the key characteristics of graphite‑copper bushings?
2021-04-01
Copper Sleeve: Non-standard Customized Winch Copper Sleeve
A copper sleeve is a lightweight, compact lifting device that uses a drum to wind wire rope or chain for hoisting or pulling heavy loads; it is also known as a winch. The copper sleeve is one of the essential components of a winch. Winches can be used independently or incorporated as part of lifting, road‑construction, and mine‑hoisting machinery. Due to their simple operation, large rope capacity, and ease of relocation, they are widely employed.
2021-03-16
Copper Bushings: What Applications Do Copper Bushings Have in Crushers?
The importance of copper bushings in crushers is primarily reflected in the following aspects: First, copper bushings serve as sliding bearings within the crusher, enduring substantial impact loads and stringent temperature control during operation. Consequently, the material and specifications of the copper bushing directly affect the crusher’s performance; therefore, it is essential to tailor wear‑resistant, high‑pressure‑rated copper alloy materials to prevent the crusher from seizing or failing under operational conditions.
Copper Sleeves: A Comparison of Wear Resistance Among Different Materials
Copper bushings are more wear‑resistant than steel bushings; however, steel bushings are rarely used in practice because they can quickly wear down the shaft. Typically, when designing journal bearings, two different materials are employed for the shaft and the bushing. Since the shaft rotates while the bearing liner remains stationary, friction is inevitable during operation, leading to wear on both the shaft and the bearing liner.
01
2021/03
Copper Bushings: What Should Be Noted When Using Composite Copper Bushings?
Copper Sleeve: What is a composite copper sleeve? By definition, it refers to a product that combines two different materials. A common example is a composite sleeve with a copper inner layer and a steel outer layer, though many other configurations exist. Since these are manufactured as composite sleeves, they must be used on specialized equipment and are relatively precision‑engineered components; therefore, careful handling is essential. Regardless of the material used, all copper sleeves should be operated in accordance with the specified tolerances, as the cost of copper sheeting is inherently higher than that of other materials.
07
2021/02
Select centrifugal-cast lead bronze bushings.
Centrifugal casting of lead‑bronze bushings can also be used to precisely control rotational speed and temperature, resulting in cast bushings free of porosity and blowholes.
Material selection is crucial; wear‑resistant components such as bushing gears can be chosen to withstand moderate loads and operating speeds.
22
2021/01
Precautions for Centrifugal Casting of High-Lead Copper Bushings
Centrifugally cast high-lead copper bushings are widely used in the electrical and electronics industries, accounting for more than half of total consumption. They are employed in a variety of cables and wires, including those for electric motors and transformers, switches, and printed circuit boards. Additionally, they are utilized in the manufacture of industrial valves and fittings, instruments, sliding bearings, molds, heat exchangers, pumps, and other applications.
04
2021/01
Piston Skirt Bronze Ring: Functions of the Piston Ring and Its Structure
Piston skirt copper ring. The piston is one of the critical components in a diesel engine; together with piston rings and cylinder liners, it forms the piston assembly. Alongside the cylinder head, it defines the engine’s combustion chamber, bearing the forces generated by the combustion of the fuel and transmitting the driving force to the crankshaft via the cylinder liner and connecting rod, thereby enabling the entire operating cycle of the internal‑combustion diesel engine.
24
2020/11
The following is information on marine‑related components: troubleshooting for marine gearboxes, which we hope will be helpful. First, gearbox vibration: 1. Verify that all mounting bolts of the marine gearbox are securely tightened. 2. Check that the installation accuracy of the diesel engine’s input coupling and flywheel, as well as the output coupling and drive shaft, meets the specified requirements. Second, friction plates: 1. Confirm that the marine gearbox clutch engages with self‑locking and that the operating mechanism is properly positioned. 2. Inspect whether the friction plates are adequately compressed; if the pressure is insufficient, refer to the user manual for adjustment. 3. Disassemble and inspect the friction plates; if they show wear or distortion…
30
2020/10
What are the causes of connecting rod failure in marine diesel engines?
Netizen question: What causes connecting rod bearing burnout in marine diesel engines? Components: There are many reasons why a diesel engine’s connecting rod bearing can burn out; they can be summarized as follows: ① Low oil pressure or blockage of the crankshaft oil passages results in insufficient lubrication of the bearing shells. ② During disassembly and reassembly, the upper and lower main bearing shells are installed backward. ③ Contaminated or degraded engine oil, water‑oil emulsification, or diesel fuel mixing into the oil can lead to increased clearance between the bearing and journal, thereby raising the impact forces on the bearing and causing it to burn out. ④ Incorrect oil grade: If an unsuitable oil grade is used, the small bearing clearance combined with excessively high lubricant temperatures may cause the oil’s viscosity to drop significantly, resulting in…
30
2020/10
Methods for Managing Marine Machinery and Equipment Parts
① Establish archives for domestic ship repair yards; in accordance with equipment management policies, review the annual maintenance plans submitted by each vessel, formulate the company’s quarterly and annual ship‑repair schedules and cost‑budget plans, prepare the annual ship‑repair program, and oversee its implementation. ② Ensure that all ship certificates remain valid. ③ Coordinate with and dispatch marine machinery and equipment maintenance personnel as required by project needs. ④ Review the annual ship‑maintenance and upkeep plan and approve the monthly ship‑reporting documents. ⑤ Conduct regular inspections of the performance of the company’s shipboard equipment and of the project department’s relevant equipment‑management systems, verify compliance with these systems, and ensure optimal equipment performance.
30
2020/10
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