The shape and size of the castings are very close to those of the parts

And reduce the surface tension of the alloy melt, in addition to the refining effect of degassing and impurity removal, which will improve the fluidity of the melt and reduce the viscosity, which is conducive to the removal of inclusions The best foundry and gases.

The main difference is that the larger content of alloying element silicon in the cast aluminum alloy exceeds most deformation The silicon content in aluminum alloys. Rare earth elements can improve the morphology of inclusions and purify grain boundaries.The addition of a proper amount of rare earth elements to the aluminum alloy can promote the refining effect. 

In addition to the strengthening elements, the cast aluminum alloy must also contain a sufficient amount of eutectic elements (usually silicon), so that the alloy has considerable fluidity and is easy to fill the shrinkage joints of the casting during casting Friends who are interested can visit Bian Xiao.If the surface of the aluminum casting is to be durable during processing, we can use electrophoresis technology.

In fact, aluminum is a relatively active chemical substance, so it is easily oxidized in the air In the initial stage of anodizing, high voltage and high current shocks are used to connect the large and small 'islands' originally divided by impurities into pieces through high current shocks. Before the shot blasting method was tried, the author used the method of hammering with a round head. 

The quality of the anodic oxide film on aluminum castings is difficult to control. A few grams ~ hundreds of tons. Scrap steel, waste parts, chips; The shape and size of the castings are very close to those of the parts, reducing the amount of cutting, which is less and without cutting. The advantages of casting parts:  can produce parts with complex shapes, especially rough blanks with complex inner cavities (such as heating);  has wide adaptability, and can be cast with metal materials commonly used in the industry. 

Another possibility is that the tire pressure is insufficient

The accelerator, brake, and steering wheel are all key devices on the car, and frequent protection can extend their service life. It means that there is air in the pipeline of your brake system, and you should go to the repair station to bleed the brake system in time. It must not be underestimated. Another possibility is that the tire pressure is insufficient, which should be repaired in time. Its working condition is directly related to the safety of our vehicles and people. 

Secondly, when refueling, if you feel that the throttle is not responding quickly or feel that the engine is sluggish, then Electric vehicle parts you should go to the repair station to check the spark plug, fuel injector and throttle valve to see if you need to replace the spark plug or clean the throttle valve and sprayer. In addition, after starting the vehicle, step on the brakes, if the first foot is extremely low, it will be normal after a few feet, and the first foot will be extremely low after a few minutes after releasing the brake pedal, and it will return to normal after a few feet. Glib. 

 At this time, you need to clean and lubricate the car. Like the throttle, if you feel the throttle is very astringent when you step on the throttle while driving, the general reason is that the throttle is dirty or the throttle cable lacks lubrication. Secondly, after starting the vehicle, press the brake pedal forcefully and there should not be a foot-to-bottom phenomenon, otherwise the brake system should be checked and repaired immediately. 

When you turn off and step on the brake pedal, the brake pedal must have enough stiffness and height, and when you step on it hard to keep it still, the brake pedal should not feel any downward sliding. This phenomenon is likely to be caused by the tightness or lack of oil in the tie rod end of the steering system or the steering bearing.The steering wheel is also an important control component on the car.. If the steering wheel trembles only when the speed is maintained at 80 to 90 kilometers per hour, it usually indicates that you should do the vehicle tire dynamic balance.

Brake is a key part of the car. In normal use, early detection of faults can avoid hidden traffic hazards. In addition, the steering is heavy when turning. If your foot feels sliding with the brake pedal, you should go to the repair station to check in time to see if there is an oil leak in the brake system

The inertial force becomes the driving force for the downhill

At this time, the center of gravity of the car moves forward, and the inertial force becomes the driving force for the downhill, which makes the car travel faster. occur. This is extremely dangerous, the driver must use the brake to reduce the speed of the car to ensure driving safety.

When encountering roads with complex road conditions, drivers often have to make preparations to evade and stop. It is recommended to use premium* brake fluid with high boiling point and not easily deteriorated to greatly improve the driving safety factor. Therefore, before going downhill, you should turn on the water reservoir switch to allow it to spray water on the outer surface of the brake drum to cool down, which can effectively improve the braking performance. 

Frequent use of braking will reduce the braking efficiency of the brake drum, and in severe cases, it will cause brake failure and cause accidents.. Fourth, cooling the brake drum For a moving car, as the temperature of the brake drum increases, the braking efficiency will decrease significantly. Therefore, driving in plateaus and hilly areas must take some corresponding maintenance measures. 

That is, after a certain distance, find a place with a slight slope and a better view to stop, let the air reservoir be full, and let the brake drum and shoes cool down before driving. Three, choose excellent* brake fluid Most hydraulically braked cars use alcohol-based brake fluid, and the alcohol contained in it is very volatile. Scientific driving When encountering a relatively long downward slope, you can drive in sections.

If you brake frequently, it is easy to cause the temperature of the brake pipe to rise and cause air resistance, which will cause the brake to fail. Second, brake correctly In order to Aluminum alloy auto parts save fuel, when the driver goes downhill, the driver puts the neutral gear to slide, and even turns off and slides

The driver can first lightly step on the accelerator to quickly release

Road condition 2: The road is congested, only stop and go In this kind of road conditions, the driver can first lightly step on the accelerator to quickly release, and then step on the accelerator. In the urban area, people who have driven for many years are not much different from those who have driven for a period of time! According to the road conditions, the fuel-efficient driving method is to use the appropriate road conditions as far as possible to correspond to the car * fuel-efficient driving speed. 

It can effectively avoid the problems of overheating and wear of the brake pads caused by intermittent braking, not only can brake well, but also It also saves Aluminum alloy machining Foundry fuel and does not hurt the car. Road condition 3: When the vehicle is close When you find that the distance to the vehicle in front can no longer reach the third gear, you just need to engage in the second gear, step on the accelerator deeply, turn to neutral, and let the car slip under the action of inertia. 

A more accurate understanding of this sentence should be that the savvy driver uses the accelerator to control the speed, and the student driver uses the brake to control the speed.As the saying goes, the old driver uses the accelerator to drive, the new driver uses the brake to drive. Therefore, we have repeatedly said that the savvy driver uses the accelerator to control the speed, and the student driver uses the brake to control the speed.

 In many cases, according to the road conditions ahead, it is much better to release the throttle in advance and slide with the block foreseeingly than to blindly refuel and wait until it seems too late to step on the brake. In this case, if there are no obstacles in front, you can go to 4th gear first. Remember that you don’t need to refuel after upshifting, just use 4th gear to slide. Road condition 1: 

Wait for the red light to start several times In this kind of road conditions, the driver only needs to engage in the first gear and refuel, and then engage the neutral gear to slide the car. One principle of driving is that you can use the throttle to slow down without using the brakes to slow down. Road condition 4: The gear is in gear 3, but it must be stopped at 100 meters ahead

Automobile body and accessories mainly Including wipers

Transmission system accessories, mainly including clutches, transmissions, gearshift Aluminum alloy parts of housing Foundry lever assemblies, reducers, magnetic materials, etc.;  Car modification accessories, mainly including tire pumps, car roof boxes, car roof racks, electric winches, etc. Walking accessories, mainly including rear Bridge, air suspension system, balance weight, steel plate, etc. Comprehensive accessories, mainly including adhesives, sealants, vehicle tools, automotive springs, plastic parts, etc.; 3.; 16. Brake system accessories, mainly including master cylinders, brake cylinders, and brakes Assembly, brake pedal assembly, compressor, brake disc, brake drum, etc. 

Other auto parts, mainly including tires, car mats and other auto parts.;  The main categories are:as well as electric punches, hot air guns, electric jacks, Electric tools such as electric wrenches;Steering system accessories, mainly including kingpin, steering gear, steering knuckle, ball pin, etc.; 11. Chemical physical accessories, mainly including coolant, brake fluid, antifreeze, lubricants, etc.; Auto Parts-Auto parts are the units that make up the car as a whole and the products that serve the car are collectively called auto parts. Automobile body and accessories, mainly Including wipers, car glass, seat belts, airbags, dashboards, etc.

 Audio-visual electrical accessories, mainly including tire pressure monitoring systems, decoders, displays, car intercoms, etc.; Engine parts, mainly including engine, engine assembly, throttle body, cylinder block, tensioner Wheels, etc. Auto electrical accessories. 

 Electrical instrument accessories, mainly including sensors, automobile lamps, spark plugs, batteries, etc. Car interior accessories, mainly including car carpets (foot pads), steering wheel covers, steering wheel booster balls, curtains, sun gears, etc. Automobile lamps, mainly including decorative lights, fog lamps, ceiling lamps, and headlights , Brake lights, reversing lights, turn signals, instrument lights, indicator lights, searchlights and other car lights; 8. Auto repair parts, mainly including sheet metal equipment, purification systems, tire changers, correctors, etc