Why do garbage trucks use sliding bearings? Roller bearings have the advantages of small friction, low mechanical loss, etc. But its size is too large. Due to the large and complex force of the garbage truck, the shaft journal size is not allowed to be reduced. The journal size must be ensured. Then the outer ring of the roller bearing is quite large, which makes the size of the crankcase quite large ( Such as domestic 1 35 series diesel engine). In addition to heavy-duty vehicles, such large cylinders on medium-sized and light-duty vehicles will affect the installation of diesel engines on the frame. The structure of the bearing pads is relatively simple, consisting of a steel soleplate and an alloy layer. At present, sliding bearings used on garbage trucks. They are collectively referred to as bearing bushes. The bottom plate of the bearing shell is usually made of 08 steel plates, and other brand steel plates are not allowed to be used as the bottom plate. The alloy layer above the bottom plate, there are more brands available. Low-power diesel engine and gasoline engine bearings, use of babbitt alloy and diesel engine with medium or higher power. The use of aluminum alloy bushings is relatively high; almost all high-power supercharged diesel engines use steel lead alloy bushings. Although the bearing is a very simple small part, it has strict requirements on the alloy composition and surface roughness.
Nickel Based Laser
Cladding Powder
Ni base alloy
powder is mainly made of NiCrBSi or NiBSi. Ni-based self-fluxing powder has
good wettability, corrosion resistance and high temperature self-lubricating
effect, and is used in components with heat resistance, corrosion resistance and
thermal fatigue resistance. In general Ni35,Ni45,Ni60 etc can be used for laser
cladding, the No means hardness of powder. Inconel 625 and 718 has good
corrosion property under higher temperature, also widely used for laser
cladding process.
Cobalt based Laser
Cladding Powder
Cobalt-based alloy
powder is the cemented carbide resistant to various types of wear and corrosion
as well as high temperature oxidation. That is, the so-called
cobalt-chromium-tungsten (molybdenum) alloy or Stellite alloy cobalt-based
alloy is mainly composed of cobalt, containing a considerable amount of nickel,
chromium, tungsten and a small amount of molybdenum, niobium, tantalum,
titanium, Alloying elements such as lanthanum, and occasionally a class of
alloys containing iron.
Co-based self-fluxing
alloys have good high temperature performance and wear resistance and corrosion
resistance, and are used in petrochemical power, metallurgy and other
industrial fields where they are wear-resistant, corrosion-resistant and
high-temperature resistant.
Iron based Laser
Cladding Powder
The work pieces
required for laser cladding and manufacturing in the actual industry are mainly
carbon steel and cast steel. The Fe-based alloy is close to the base material
in composition and has good wettability. The advantage of Fe base powder is
lower cost and good wear resistant of cladding layer. As a result, it`s the
most widely used for laser cladding process. It is suitable for parts that
require local wear resistance and are easily deformed.
WC blended Laser
Cladding Powder
Tungsten carbide blended with Ni alloy powder is the best
choice for wear resistant work piece. This unique process can bring excellent
wear, corrosion and high temperature resistant. Our blend powder can achieve
different portion of WC from 35% to 60% without crack under suitable cladding
parameter.
Iron Alloy Powder,Nickel Alloy Powder,Cobalt Alloy Powder,Laser Cladding Powder Luoyang Golden Egret Geotools Co., Ltd , https://www.xtcmetalpowder.com
In order not to make the size of the cylinder too large, the garbage truck diesel engine uses sliding bearings. The most important feature of sliding bearings is that they can withstand large shock loads and are suitable for operation under heavy load. Because the sliding bearing and the journal are supported by the oil film, they can be used under harsh working conditions. It is customary for China to refer to the crankshaft bearing as a large tile and the connecting rod bearing as a small tile. This is because they are shaped like the tiles that cover the house and are therefore used all the time, but also different from roller bearings.
