Iron-based alloy powder is commonly used in plasma transfer arc welding (PTAW) due to its excellent mechanical properties and high resistance to corrosion and heat. This type of powder is typically composed of iron as the base metal, along with various alloying elements such as nickel, chromium, molybdenum, and tungsten. Fe Alloy Powder,Stainless Powder,High Temperature Powder,Iron Base Pta Welding Powder Luoyang Golden Egret Geotools Co., Ltd , https://www.lygoldentool.com
The quality of parallel imports is difficult to ensure domestic audio conversion. In addition to being unprofessional and non-standard, fake and shoddy and parallel imports also pose great risks for audio conversion. Some owners believe that the quality of the parallel pedigree is pure and relatively good. According to a survey by the reporter, the reality is the opposite. In order to cope with inspections during the smuggling of many smuggled goods, many of them were cleared to get through. During the assembly recovery process, the quality of the process has dropped significantly due to the low level of operators. At the same time, the car stereo is different from the home stereo, and the use of harsh environments, temperature changes, vibration, dust, etc. will cause the car stereo to malfunction. There is no warranty for parallel audio, and you have to pay for it yourself if you are damaged. Apart from the need for first-class installation technology, the installation of car audio is essential for good after-sales service. In addition, some of the parallel import formats are different from the current broadcast formats in China, and radios cannot be used normally. In addition, there are a large number of reworked goods and refurbished machines in parallel imports, which have a short service life and are difficult to guarantee.
The reporter learned that the price of water in parallel imports is particularly large. A purchase price of about 300 yuan configuration, once affixed to the "international brand" vest, unscrupulous businesses dare to shout thousands of dollars in price, in their words, wearing a three-foot cap, not afraid to cut three. As a result, profits have been doubling, but quality is still not guaranteed.
In fact, there are many counterfeits and counterfeits in China, which are closely related to the spending habits of many people.
A certain car owner in Beijing wants to install an Alpine model host. A professional audio shop offers 2,300 yuan. The gentleman shopped in three stores. In an auto parts market, he inquired about the same model of audio with the same brand, and the price was as low as 1,000 yuan. He did not hesitate to choose the so-called lowest price.
Many people mistakenly believe that car audio is a profit-making industry. The spread of hundreds or even thousands of dollars is still normal, and you can also buy real goods.
In addition, quite a lot of people, the conversion of audio is purely for show to others, how quality, and do not care. This naive consumer psychology also provides a living soil for fakes.
Therefore, many high-level audio tuners can't help sighing: At present, the domestic audio modification market is at the primary level of product-led rather than service-driven, and professional services provided by regular audio stores are not valued by consumers. The price is seen more important than service. In this case, the cheap fakes have more room for survival.
Some unscrupulous merchants have grasped the mentality of some people who “only recognize prices without looking at qualityâ€. According to the reporter, a Japanese brand that has been very popular in the market has as high as 1/5 of its parallel imports and fake goods.
Su Mu, general manager of Beijing Best Car Audio Sales and Repair Center, believes that due to the rapid growth in market demand for audio modification, there is no industry standard, access system, and swarming phenomenon is very serious, resulting in the current audio conversion industry is relatively chaotic, quality is uneven - engage in decoration Do sound and change the sound of the tires, do car beauty, car repair also installed audio......
There is no protection for the sales channels of the products and the phenomenon of string goods is serious. Many exclusive agency products are available everywhere. All these, let fakes, parallel imports have a chance to fish in troubled waters.
Witnesses discriminate between genuine and fake Since fakes and parallel goods are so harmful, how do you distinguish between fakes and parallel audio?
According to a survey conducted by the reporter, quite a lot of counterfeit goods were faked, but some counterfeit goods were faked.
For the former, attentive consumers may be able to make general judgments by looking at packaging, printing, and workmanship; and copying realistic counterfeit sounds, without comparison, can hardly tell the difference, and even professional technicians cannot easily distinguish authenticity from falsehood.
At present, there are many fake car audio speakers on the market, and consumers are most easily fooled. Among them, several brands such as Sony, Pioneer, Alpine, Golden Phoenix, and Raiford have been imitated the most. For the first three types, consumers should be able to roughly judge whether or not the juncture of the horn metal part and the plastic part is tight and burr-free, and whether the label is delicate or not, and the latter two are basically due to materials, processes, and genuine products. No difference, it is difficult to judge the authenticity.
In addition, some audio equipment has a unique identification code, consumers can also judge through this. When it is not sure, consumers can find the brand agent to help identify.
Replicators mostly increase the maximum carrying power of the horn. This is because the maximum bearing power is an important technical indicator of the horn. At present, many mid-range and low-range speakers are measured by this indicator. As long as the value is increased, many problems can be concealed and consumers can be confused. In addition, since the sound quality characteristics of each speaker are different, professionals can only identify the speaker if they are familiar with the brand. For ordinary consumers, this is an almost impossible task.
The reporter's notes determine whether the shop is professional or not, first of all, whether it has a sales authorization certificate, an operating license, and a car audio professional installation training certificate approved by the audio brand. After checking whether the relevant procedures are complete, we must also check whether the product has a formal warranty card, fill in the sales date, cover the valid seal of the sales unit, confirm the warranty time, and place the warranty and issue the invoice.
Second, brand-name stores will have excellent signs and will be awarded by the audio company to prove their eligibility for operating their products. Finally, it depends on the store's surface and whether the installation environment is tidy, including the goods placed, the prototypes provided, and the quality of the clerk.
The specific composition of the iron-based alloy powder may vary depending on the desired properties and application requirements. For example, adding nickel can increase the strength and toughness of the weld, while chromium enhances the corrosion resistance. Molybdenum and tungsten are often added to improve the high-temperature strength and creep resistance of the weld.
Iron-based alloy powders for PTAW are available in various particle sizes, typically ranging from a few micrometers to several hundred micrometers. The powder is usually fed into the plasma arc through a powder feeder, which ensures a controlled and consistent supply of powder during the welding process.
During PTAW, the powder is melted and deposited onto the workpiece, forming a weld bead. The high energy plasma arc provides the heat necessary to melt the powder and the base metal, creating a strong and durable weld joint.
Overall, iron-based alloy powder for plasma transfer arc welding offers excellent weldability, high mechanical properties, and resistance to corrosion and heat, making it suitable for a wide range of applications in industries such as aerospace, automotive, and power generation.
Fish and dragons need to have a good eye to buy car audio and video products
Mr. Liu, a consumer in Chongqing, spent 5,000 yuan to modify a set of famous brand car audio, which is nearly 1/3 cheaper than the market price. However, in less than two months, there was a phenomenon of a disc, and it was often impossible to read the disc afterwards. Finally, he went to a regular brand car audio shop to check, only to know that the sound he installed is a fake. Although the price is cheaper than genuine, the quality is very different.