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Guangdong Xinzhaolang Precision Technology Co., Ltd.: Make small springs a big business
01 Mar 2022

"Small Spring Big World" is located in Guangdong Xinzhaolang Precision Technology Co., Ltd. (hereinafter referred to as "Xinzhaolang") located in Huakou Industrial Zone, Ronggui. The six characters on the front desk are particularly eye-catching. Xinzhaolang has grown from a small factory to a high-tech enterprise focusing on spring production in the ten years since its establishment. On March 1, the reporter interviewed Cai Langming, the head of the company. The output value increased by 200 times in ten years 10 years ago, Cai Langming came to Shunde from Yunfu and became a capacitor salesman. Accidentally learned that a Ronggui company needs to touch the spring, Cai Langming made the deal. This experience also allowed Cai Langming to discover business opportunities in spring production. In 2012, the predecessor of Xinzhaolang was born in Ronggui Xijiao. Cai Langming, who studied computer science, is naturally sensitive to the Internet, and began to advertise on a large scale through exploration. The online promotion has brought unexpected results to the company, and orders from the Pearl River Delta and Yangtze River Delta regions are flying like snowflakes. "In the first year, a business of more than 300,000 yuan was made." Talking about the entrepreneurial process ten years ago, Cai Langming said bluntly that he also entered the field of spring production by accident. The development of the enterprise is related to operation, and it is inseparable from home appliances in the past decade , the rapid progress of auto parts and other industries. "In less than three years, the output value has exceeded 10 million yuan, and it is expected to exceed 60 million yuan this year." Like many start-ups, in the first few years Cai Langming was both the boss, sales and finance. "By 2018, I feel that this extensive management model can no longer adapt to the situation. Enterprises need to introduce high-quality talents, and the governance structure must also change." Cai Langming is determined to carry out the shareholding reform of the enterprise and introduce the partnership system to promote the enterprise's operation in the

How to test the service life of compression springs | compressione spring
06 Dec 2021

One sample selection      When preparing samples, care should be taken to eliminate some abnormal factors that affect fatigue strength. There are two types of factors that affect the spring fatigue strength test: one is internal factors, such as chemical composition, metallographic structure, etc.; the other is external factors, such as surface condition, shape and size, temperature, surrounding medium, etc. Generally, it is based on the inherent fatigue strength of the material (internal factors), and the external factors are considered for correction. Therefore, in the test process, the test piece should try to eliminate the influence of external factors. When conducting the first type of test, samples can be prepared according to the conditions of use, or samples can be taken directly from the product. The second and third types of tests should be sampled according to specific requirements.     A. Specimen size The spring size is always different, so even under the same amount of deformation, the stress and fatigue strength between them are not exactly the same. In order to accurately reflect the fatigue strength of the sample, the measurement accuracy of the size should be improved on the basis of reducing the size error.      1) The measurement accuracy of the sample size should be greater than 0.5%. When the material size is less than 2 mm, its accuracy should be 0.01 mm. If 0.5% of the sample size is less than 0.01mm, the accuracy is 0.01mm.     2) When measuring the size of a circular cross-section (such as outer diameter D2, spring wire diameter d), two diameters perpendicular to each other on the same cross-section should be measured, and the average value should be used as the diameter.     3) According to the spring shear stress calculation formula:      It can be seen that in order to reflect the maximum shear stress, the maximum value of spring D/D should be measured.     B. Sample shape     1) In order to ensure that the spring does not produce eccentric load after being stressed, the parallelism of the two ends of the spring and the perpendicularity of the whole spring should be strictly checked.