Preventive Maintenance For CNC Machining Center

People usually do some preventive maintenance for CNC machining center. Their purpose is to reduce the failure rate. The main working includes personnel arrangement, building regulations file and daily maintenance.

Arrange workers to each CNC machine. Some are responsible for operating, some are focused on technology or repair. All workers should improve their own technical level constantly.

Formulating operation rules according to the detail performance of each CNC machine and processing object. Build work and repair archives and mangers ought to check, review and improvement.

In fact, we should pay more attention to daily maintenance. At first, create daily maintenance plan to each CNC machine repair. That must includes lubrication of the transmission system, temperature control, the balance system, cooling system and so on.

Sometimes the CNC machine has been unused for a long time. Every motion segment of machine exist dust, and even has been rust. These all will have efffect on driving performance and precision of the machine tool. One CNC machine is composed by a lot of electronic components. Their service life and performance are in great discreteness. At the first year, they  are in running stage. The second stage is effective life stage. During this second stage, machine can give full play to efficiency. With resonable using and good daily maintenance, machine could running in normal more than five years. The final stage is aging stage. The system life almost step into the ending. Certainly the electrical hardware failure will be increased gradually.

Article From: http://www.dongruncasting.com/ns_Preventive%20Maintenance%20For%20CNC%20Machining%20Center_618.htm

Aluminum Alloy Casting Properties

Aluminum alloy casting properties and chemical composition are closely related. Al-Si alloy is near the eutectic composition, its casting properties is best. On the contrary, Al-Cu alloy is far away from the eutectic composition. Its solidification temperature range is big. So it has bad casting properties.

Aluminum alloy is very easy to be aspirated and oxidation. So the gating system must ensure that the aluminum liquid flowing quickly and smoothly which could avoid stirring. Each kind of casting method is fit for aluminum alloy casting. You can choose sand casting method while the production is in less amount. Low pressure casting is only fit for water pressure casting which needs high dense. Pressure casting can apply to the small and complex one who with thin wall.

There are many kinds of aluminum alloy melting furnace. In general, people like to use coke crucible furnace and resistance crucible furnace. Besides induction furnace is also used in smelting work. The alloy structure is much more complex than the pure metal. Because the alloy is composed by two or more kinds elements. The interaction between elements can form a variety of different phase.