Used car detection technology has become a hurdle for second-hand car e-commerce. It is reported that the description of the used car sold on the 51 car website is inconsistent with the reality. The introduction information is a vehicle that has passed more than 200 tests and has no major accidents. It has been identified as a flooding car by a consumer at a third-party repair shop. At present, professional second-hand vehicle inspectors can not guarantee 100% of the vehicle condition information is accurate, but the e-commerce platform should reduce the risk of consumers' purchase of cars through strict pre-examination and post-sales service. Alloy Steel Investment Casting
The characteristic of alloy steel casting is similar to that of carbon steel casting and cast steel containing alloy elements such as manganese, chromium, and copper is a cast alloy steel. China alloy steel precision casting is also called lost wax casting, or China alloy steel investment casting. Casting products are precise, complex, and close to the final shape of the parts, which can be used without processing or with little processing, so It is an advanced technology.
In wax pattern process,we mix stearic acid and paraffin wax in wax pattern making,as you know,it is better than polyethylene,and the wax deformation is small.
In
shell making,we adopt automatic sand-covering production line, which was
invented under the guidance of our general manager.The indoor temperature was
controlled by air-conditions,keeping the temperature at 24℃±1℃, which can make the castings much more
stable,the internal tissues much more well-proportioned.
In
shell hardening process,we use aluminium chloride to harden the shell.This can
make the shell so hard that it can`t be distorted,at the same time the bug
which the casting may have will be decreased.If there are letters or numbers in
it,they will be much clearer.
In
dewaxing process,about 95% of the castings suppliers adopt the original water dewaxing
technics,but we using the advanced steam dewaxing technics,which we are very
proud of.This can effectively avoid the air-hole and sand-hole,making the
casting look much nicer.
In
smelt process,we use middle frequency furnace,avoiding the emergence of the
oxide; in molten steel control part,we use Germany-imported direct reading spectrometer
machine,assuring its quality before the molten steel out of the furnace.During
this process we use ERP production and management software to get the feedback
information.
In
shell-knock out process,we have special machines,which can decrease the hitting
and knocking, easily made by manual shell knocking out.
In shot-blasting
process,we have crawler-type and hanging shot-blasting machine,with steel shot
0.5-0.8,making the products smooth.Of course,if the customer wants it look much
nicer,we also can carry out sand-blast treatment.
In
heat treatment process,we use electric furnace,and adopt double-temperature
control in order to heat the products equally.As a result, the products will
have great metallurgical structure.
Our
tolerance can reach at the grade of 5-7 according to our country`s tolerance
standard.
In machining process,we have 12 CNC machining centers
and some other machines, so we can make further machining if the customers need.
Products in alloy steel cast factory divide into forklift parts investment casting, Agricultural Machinery Parts Investment Casting, Petroleum Parts Investment Casting, and Chemical Parts Investment Casting.
Alloy Steel Precision Casting,Alloy Steel Investment Casting,Alloy Steel Casting,Precision Cast Alloy Steel Wei fang junlong precision casting Co.,Ltd , https://www.junlongcasting.com
Standing on the slogan of "Internet +", the injection of capital has led to a burst of growth in the used car e-commerce industry last year. Youxin used cars, melon seeds used cars, and everyone's car through the overwhelming advertising has been well known by consumers. But even the current mainstream used car e-commerce platform, there are no shortage of accident car disputes.
Consumer Mr. Wang has experienced the process of selling cars for many used car e-commerce platforms. He said, "Some testers just start taking photos and uploading information by simply watching them. They are slightly responsible for testing with the detector, or testing two laps, but it is not very authoritative."
At present, many used car e-commerce companies have played a reliable, reliable slogan to attract consumers, which requires e-commerce platform to have stricter procedures for the detection of used cars.
According to industry insiders, it is only the most basic part of vehicle detection through visual observation of second-hand car conditions. More detailed inspections also need to “sit on the shelves†and cooperate with electronic equipment testing. The used cars have the problem of “one car and one condition†and are detected. The situation is complicated and there are high requirements for the inspectors.
 