There are still shortcomings in China's high-speed rail, with a large number of bearings imported every year. Is it really not feasible for domestic bearings?

Tech 2023-07-15 19:27:46 Source: Network

Export of domestic bearings in 20223.39 billion sets, generating 2

Export of domestic bearings in 20223.39 billion sets, generating 2.97 billion US dollars in foreign exchange and importing bearings1.579 billion setsUsing foreign exchange of 2.693 billion US dollars, the overall income was 276 million US dollars.

But in fact, even for a small bearing on a high-speed railway, China still relies on imports.Why does a bearing have to be imported? Can't China really produce it?

Do high-speed rail bearings still rely on imports?

Although domestic bearings have a good situation in terms of export earnings. But upon closer inspection, it will be found that the exported domestic bearings are single sets87 million US dollarsImported products can achieve170 million US dollarsThe price has doubled. The reason for this is that most of the products currently produced in China areMiddle and low end bearings.

The current variety and specifications of bearing products in the world are approximately150000The only ones that can be produced in China areMore than 20000.80%20%.What are the necessary conditions for producing high-end bearings?

What conditions are required for producing high-end bearings

Simply put, the hardest part israw materialSecondlyProcessing technology..

.10 times higher price..

Previously, scientists had already known thatAdding Rare Earth Elements to Steel.

To solve this problem, the Institute of Metals, Chinese Academy of Sciences, after more than ten years of research, has clarified the main mechanism of rare earth action in steel and developedLow oxygen rare earth steel.

.So, does China currently have domestically produced high-speed rail bearings?

Do China have domestically produced high-speed rail bearings

Actually, as early as 2020, China'sLuoyang LYC bearing250~300120.

.98%8-10.96% and 3-5 times.

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