Weihaiwei hard tools: private small enterprises marry international giants
The full ceramic ball bearings listed below are supplied with rings and balls made from zirconium dioxide (ZrO2). These zirconia bearings are available as full complement (no cage) or with cages made from PTFE, PEEK or 316 stainless steel.
These are non magnetic, non-conductive and highly corrosion resistant to most chemicals although ZrO2 bearings are not recommended for prolonged contact with steam. Full complement bearings or those with a 316 stainless cage can be used up to 400°C while bearings with a PEEK or PTFE cage can cope with temperatures of up to 250°C. For temperatures below -70°C, PTFE or 316 stainless steel cages are preferred. Standard radial clearance for full ceramic bearings is C0 but other clearances can be supplied to order.
ZrO2 ceramic bearings are generally used for their extreme temperature capabilities, excellent corrosion resistance or non-magnetic properties. Other sizes can be supplied on request.
The Description of Ceramic Bearings: Cermic Ball Bearing,Full Ceramic Bearing,Hybrid Ceramic Bearing,Self-Aligning Full Ceramic Ball Bearing Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearings.com
Recently, MAHLE China received an order for a piston of a German brand. The quality requirements of the products are very high, and the requirements for the construction period are also strict. The tool for processing pistons is an important equipment in production. This “hard†life naturally falls to the long-term partner of MAHLE China – Wei Hard Tools.
As the company's chief engineer and chairman, Yu Qiao personally took the lead and led the researchers to study the improvement plan. After a month of careful research, they have further improved the tool material and geometry. The improved tool life is expected to increase by more than 30%.
This year, Wei Hard Tools has been working with MAHLE China for more than ten years.
For more than ten years, product improvement based on the constantly improving standards of the other party has become a common practice. Yu Qiao said that the company is willing to accept such challenges and spare no effort to meet each other's demanding requirements. Because it is under their high standards and strict requirements, Wei hard has achieved its own growth.
The MAHLE Group is one of the world's largest filter manufacturers and is ranked among the top 30 suppliers of automotive components. It is the world's three largest suppliers of piston systems, cylinder components, valve systems, air management systems and liquid management systems. one. The Wei hard tool is just a private small and medium-sized enterprise in Weihai, with more than 130 employees.
The two companies with such wide disparities have established an unbreakable relationship between supply and demand. At present, MAHLE uses all of its hard-working tools in its manufacturing plants in China.
Relying on Mahler's “big treeâ€, it benefited from Joe's focus on China's superhard material tooling field and his keen judgment on the development of the industry.
In 2000, Yu Qiao established Weihaiwei Hard Tools Co., Ltd., becoming the only female entrepreneur in China's superhard material tooling field.
"If you want to do something good, you must first sharpen your tools." Superhard tools are one of the most critical tools in the automotive industry. However, for a long time, the most advanced tool production technology has been monopolized by foreign countries, especially German standards, made in Germany, and more like an insurmountable Himalaya in the industry.
Initially, Wei Hard Tools provided tools for the former Liaoning Piston Factory. The annual business transaction was only 30,000 yuan. After the MAHLE Group merged with the Liaoning Piston Factory, Yu Qiao took the opportunity to the hand.
After MAHLE led the piston plant, all suppliers were reorganized and screened. At that time, the foreign management insisted on using German products on the knives, at least the products produced by German investment companies in China, and did not put the pure local private small enterprises into a hard tool.
Yu Qiao realized that this is a good opportunity for Weihard Tools to open up bigger markets and achieve leapfrog development. She actively strives for it, and ultimately relies on excellent product quality, and has passed the strict screening assessment of the other party, becoming the company's tool supplier.
However, as a world-class multinational company, MAHLE has very high requirements for tool performance, and often puts forward product demands beyond the technical strength of Weihard Tools.
Born in a military family, Yu Qiao combines the flexibility of women with the strength of military personnel. Facing challenges, not shrinking and not afraid of difficulties, while constantly researching and developing technology, he constantly seeks the most effective production equipment within his capabilities. The research and development results become a reality step by step.
In 2003, Yu Qiao wanted to process a diamond product, but tried all the domestic production equipment could not meet her requirements, so I had to look to the International Machine Tool Show held in Beijing. However, this spring, the SARS virus is raging in the capital. On the top of the wind, Joe went to the Beijing exhibition site with a large package of raw materials, allowing the participating equipment manufacturers to process the products she wanted on the spot.
After continuous debugging, processing and testing, a Japanese enterprise equipment supplier finally produced a product that satisfied Joe. It is this equipment that she risked her life to realize, the realization of the processing of diamond shaped tools by Weihard tools, and also established the leading position of Weihard in the field of domestic piston tools, which has promoted the whole piston production industry. .
At that time, Mahler was most pleased with the ability to produce diamond shaped tools. “Before this, the tools used by MAHLE China were completely imported, the procurement cycle was three to four months, and payment was required. After the problem occurred, the supplier could not communicate with the supplier in time, and the technical service could not keep up. Therefore, after we made this product, we solved their big troubles.†Yu Qiao said that after this battle, it has laid a solid position in the ranks of Mahler China's tool suppliers.
At present, Weihard Tools is striving to establish cooperation with Mahler's companies in other countries. It has sent engineers and samples to some factories, waiting for the other party's assessment. “Multinational companies have very strict control over product procurement, quality requirements are very high, and the assessment process is very long, but we have confidence.†Yu Qiao confidently said.
In addition to Mahler, in the list of customers, Weimen, GM, SAIC, Hyundai Wia, Geely, Volvo, Weichai and other well-known enterprise parts manufacturers or engine manufacturers are among them.
On the list of “China's industrial industry leader†selected by the Ministry of Industry and Information Technology of China in 2013, Weihard Tools has a place in it. It is the only small and medium-sized private enterprise that produces non-standard tools for superhard materials and has become the domestic superhard material tool manufacturing industry. banner.
At the beginning of this year, Weihard Tools successfully landed on the New Third Board and became one of the first 285 companies listed after the expansion of the New Third Board in the country. It has set a milestone in the company's development history. 
Compared to steel, Ceramic ball Bearings have many specific advantages. They offer superior corrosion and heat resistance, higher dimensional stability, and lower density, which facilitate high speed. Ceramics are superior to steel in heat and corrosion resistance, and are lightweight and extremely hard as well. Consequently, ceramic rolling bearings can be used in environments where conventional steel bearings cannot. That is to say, the superiority of these bearings makes it possible that they can be applied in some special environments.
Firstly, they can be used in corrosive environments. Compared to stainless steel bearings, hybrid and all Ceramic Bearing lasted three and twenty times longer respectively. It is presumed that water readily adheres to silicon nitride and forms a better lubrication film, leading to extended bearing life.
Secondly, they can be performed in corrosive agents. Generally, silicon nitride has excellent corrosion resistance. However, corrosion resistance varies depending on the type and quantity of sintering additives, and certain corrosive agents decrease in hardness and flexural strength. In such situation, it is can be proved that the carbide-based ceramic bearings are the most effective.
Thirdly, they can be used in high-temperature vacuum. An all-silicon nitride Ball Bearing with a self-lubricating laminated cage (mainly composed of MoS2) and with MoS2-coated rings and balls proved superior in durability in a high-temperature vacuum environment. Compared with the hybrid bearings, the all-ceramic bearing was superior in both dynamic frictional torque and life.
Fourthly, they can be performed with poor lubrication. As ceramics are extremely hard and have outstanding wear resistance, they outperform other materials in bearing life without lubrication. According to a test, the steel bearing seized within a short period while the hybrid and all 627 Ceramic Bearings, though sustaining wear, did not. And the all-ceramic bearing sustained considerably less wear than the hybrid bearing, indicating that its endurance life is much longer.