Die casting is carried out in the die-casting machine on the metal-type pressure, is the highest production efficiency of the casting process. Die casting machine is divided into two types of hot chamber die casting machine and cold chamber die casting machine. Hot chamber die casting machine with high degree of automation, less material loss, production efficiency than the cold chamber die casting machine higher, but by the heat resistance of the mechanical constraints, the current can only be used for zinc alloy, magnesium alloy and other low melting materials casting production The Today's widely used aluminum alloy die castings, due to the higher melting point, can only be produced in the cold chamber die casting machine. The main feature of the die-casting is the metal liquid in the high-pressure, high-speed filling cavity, and under high pressure forming, solidification, die casting is the lack of: because the metal liquid in the high-pressure, high-speed filling the cavity process, The air in the cavity wrapped in the casting inside the formation of subcutaneous air holes, so aluminum alloy die casting should not heat treatment, zinc alloy die casting should not be spray (but can paint). Otherwise, the castings internal pores in the above-mentioned treatment of heating, will be subject to thermal expansion caused by casting deformation or bubble. In addition, the die cutting of the mechanical cutting allowance should also be smaller, generally about 0.5mm, can reduce casting weight, reduce the amount of cutting to reduce costs, but also to avoid penetrating the surface dense layer, exposed subcutaneous stomata, resulting in Workpiece scrap.
CNC (CNC machine) is a computer numerical control machine (Computer numerical control) for short, is a program controlled by the automation machine. The control system can logically process the program with the control code or other symbol instruction, decode it by the computer, so that the machine can carry out the prescribed action, and the blank material is processed into semi-finished finished parts by cutting tool.
CNC milling machine can be used to process the parts of the plane, inside and outside the contours, holes, threads, etc. Through the two-axis machining parts of the plane contour, through the two-axis semi-three, three-axis or multi-axis linkage to process parts of the space surface.
From the distribution of machine tool movement characteristics, CNC milling machine can also be used as CNC drilling machine or CNC boring machine, complete milling, boring, drilling, expansion, hinge, tapping and other process content.
General CNC machining usually refers to precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine, etc.
CNC milling machine can be used to process the parts of the plane, inside and outside the contours, holes, threads, etc. Through the two-axis machining parts of the plane contour, through the two-axis semi-three, three-axis or multi-axis linkage to process parts of the space surface.
From the distribution of machine tool movement characteristics, CNC milling machine can also be used as CNC drilling machine or CNC boring machine, complete milling, boring, drilling, expansion, hinge, tapping and other process content.
General CNC machining usually refers to precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine, etc.
Normally, the temperature of the imperial bearing starts to rise slowly as the bearing runs, reaching a steady state after 1-2 hours.
The normal temperature of the bearing varies with the heat capacity, heat dissipation, speed and load of the machine.
If the lubrication, installation is not appropriate, the bearing temperature will rise abruptly, there will be abnormal high temperature, then must stop running, take the necessary precautions.
Causes of high temperature bearings include: insufficient lubrication or excessive lubrication, lubricant. Contains impurities, the load is too large, bearing damage ring, lack of gap, and oil seal produced by high friction and so on.
So continuous monitoring of the imperial bearing temperature is necessary, whether it is measuring the bearing itself or other important parts. If the operating conditions are constant, any temperature change may indicate that a fault has occurred.
The importance of the British bearing, meaning that when it is damaged, it will cause the equipment to stop, so this type of bearing should be the best temperature detector installed. Normally, an inch bearing will have a natural temperature rise after just lubrication or re-lubrication and last for one or two days.
Excavator bearing installation and removal methods should be based on excavator bearing structure, size and size of the excavator bearing parts with the nature of the match. Installation, removal of the pressure should be directly added to the tight fit on the end of the excavator bearing gear, can not pass through the excavator bearing rolling body transfer pressure, because it will cause indentation in the excavator bearing surface, affecting the normal work of the excavator bearings, Even the excavator bearing damage. Excavator bearing retainers, seals, dust cover and other parts are easy to deformation, installation or removal of excavator bearing pressure can not be added to these parts.
The normal temperature of the bearing varies with the heat capacity, heat dissipation, speed and load of the machine.
If the lubrication, installation is not appropriate, the bearing temperature will rise abruptly, there will be abnormal high temperature, then must stop running, take the necessary precautions.
Causes of high temperature bearings include: insufficient lubrication or excessive lubrication, lubricant. Contains impurities, the load is too large, bearing damage ring, lack of gap, and oil seal produced by high friction and so on.
So continuous monitoring of the imperial bearing temperature is necessary, whether it is measuring the bearing itself or other important parts. If the operating conditions are constant, any temperature change may indicate that a fault has occurred.
The importance of the British bearing, meaning that when it is damaged, it will cause the equipment to stop, so this type of bearing should be the best temperature detector installed. Normally, an inch bearing will have a natural temperature rise after just lubrication or re-lubrication and last for one or two days.
Excavator bearing installation and removal methods should be based on excavator bearing structure, size and size of the excavator bearing parts with the nature of the match. Installation, removal of the pressure should be directly added to the tight fit on the end of the excavator bearing gear, can not pass through the excavator bearing rolling body transfer pressure, because it will cause indentation in the excavator bearing surface, affecting the normal work of the excavator bearings, Even the excavator bearing damage. Excavator bearing retainers, seals, dust cover and other parts are easy to deformation, installation or removal of excavator bearing pressure can not be added to these parts.
Normally, the temperature of the imperial bearing starts to rise slowly as the bearing runs, reaching a steady state after 1-2 hours.
The normal temperature of the bearing varies with the heat capacity, heat dissipation, speed and load of the machine.
If the lubrication, installation is not appropriate, the bearing temperature will rise abruptly, there will be abnormal high temperature, then must stop running, take the necessary precautions.
Causes of high temperature bearings include: insufficient lubrication or excessive lubrication, lubricant. Contains impurities, the load is too large, bearing damage ring, lack of gap, and oil seal produced by high friction and so on.
So continuous monitoring of the imperial bearing temperature is necessary, whether it is measuring the bearing itself or other important parts. If the operating conditions are constant, any temperature change may indicate that a fault has occurred.
The importance of the British bearing, meaning that when it is damaged, it will cause the equipment to stop, so this type of bearing should be the best temperature detector installed. Normally, an inch bearing will have a natural temperature rise after just lubrication or re-lubrication and last for one or two days.
Excavator bearing installation and removal methods should be based on excavator bearing structure, size and size of the excavator bearing parts with the nature of the match. Installation, removal of the pressure should be directly added to the tight fit on the end of the excavator bearing gear, can not pass through the excavator bearing rolling body transfer pressure, because it will cause indentation in the excavator bearing surface, affecting the normal work of the excavator bearings, Even the excavator bearing damage. Excavator bearing retainers, seals, dust cover and other parts are easy to deformation, installation or removal of excavator bearing pressure can not be added to these parts.
The normal temperature of the bearing varies with the heat capacity, heat dissipation, speed and load of the machine.
If the lubrication, installation is not appropriate, the bearing temperature will rise abruptly, there will be abnormal high temperature, then must stop running, take the necessary precautions.
Causes of high temperature bearings include: insufficient lubrication or excessive lubrication, lubricant. Contains impurities, the load is too large, bearing damage ring, lack of gap, and oil seal produced by high friction and so on.
So continuous monitoring of the imperial bearing temperature is necessary, whether it is measuring the bearing itself or other important parts. If the operating conditions are constant, any temperature change may indicate that a fault has occurred.
The importance of the British bearing, meaning that when it is damaged, it will cause the equipment to stop, so this type of bearing should be the best temperature detector installed. Normally, an inch bearing will have a natural temperature rise after just lubrication or re-lubrication and last for one or two days.
Excavator bearing installation and removal methods should be based on excavator bearing structure, size and size of the excavator bearing parts with the nature of the match. Installation, removal of the pressure should be directly added to the tight fit on the end of the excavator bearing gear, can not pass through the excavator bearing rolling body transfer pressure, because it will cause indentation in the excavator bearing surface, affecting the normal work of the excavator bearings, Even the excavator bearing damage. Excavator bearing retainers, seals, dust cover and other parts are easy to deformation, installation or removal of excavator bearing pressure can not be added to these parts.
water cooled condenser
Condenser, also known as "liquefier", is a heat exchanger in which the steam is released by heat and liquefied. In a refrigeration system, it is a heat exchanger that exotherms the refrigerant out of the system. The refrigerant from the compressor heats the steam into the condenser, the heat transfer to the surrounding medium - air or water, and its own due to the release of latent heat and condensed into liquid p liquefaction). According to the cooling medium used, the condenser can be divided into air-cooled (or air-cooled) and water-cooled.
plate fin evaporator
The evaporator is a heat exchanger in which the liquid refrigerant evaporates. In the refrigeration system, the evaporator is a cooling device, which belongs to the wall heat exchanger, the heat of the cooling medium passes through the wall of the pipe wall to the refrigerant, the refrigerant evaporates at a low temperature, and the heat is transferred from the evaporator go. Refrigeration system in the evaporator according to different ways, can be divided into direct cooling and indirect cooling two categories. Both cool air or cool the object, which cools the coolant - brine or fresh water before cooling the air or cooling the object. The former cooling fast, cold loss of small, compact structure, mainly for refrigerators, refrigerators. Small cold storage, small refrigeration equipment and a variety of air conditioners, while the latter for larger air conditioning and refrigeration equipment.
Condenser, also known as "liquefier", is a heat exchanger in which the steam is released by heat and liquefied. In a refrigeration system, it is a heat exchanger that exotherms the refrigerant out of the system. The refrigerant from the compressor heats the steam into the condenser, the heat transfer to the surrounding medium - air or water, and its own due to the release of latent heat and condensed into liquid p liquefaction). According to the cooling medium used, the condenser can be divided into air-cooled (or air-cooled) and water-cooled.
plate fin evaporator
The evaporator is a heat exchanger in which the liquid refrigerant evaporates. In the refrigeration system, the evaporator is a cooling device, which belongs to the wall heat exchanger, the heat of the cooling medium passes through the wall of the pipe wall to the refrigerant, the refrigerant evaporates at a low temperature, and the heat is transferred from the evaporator go. Refrigeration system in the evaporator according to different ways, can be divided into direct cooling and indirect cooling two categories. Both cool air or cool the object, which cools the coolant - brine or fresh water before cooling the air or cooling the object. The former cooling fast, cold loss of small, compact structure, mainly for refrigerators, refrigerators. Small cold storage, small refrigeration equipment and a variety of air conditioners, while the latter for larger air conditioning and refrigeration equipment.