| Customization: | Available |
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| Certification: | ISO |
| Surface: | Spiral |
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Production process of spring steel wire
Material Selection and Pretreatment: Our journey begins with the selection of the finest high carbon steel or alloy steel, celebrated for their remarkable elasticity and strength. This stage initiates with preprocessing, where heating and rolling processes meticulously refine the microstructure and mechanical properties, laying the groundwork for a product of superior quality.
Step One
Surface Treatment: This critical stage involves employing techniques such as acid pickling phosphating or mechanical methods. These methods are carefully selected to effectively remove iron oxide scale, create a protective phosphating film, or achieve a flawless, smooth surface. Especially for spring steel wires that demand a high fatigue life, such as valve spring steel wires, peeling the coil is essential to minimize surface defects and ensure longevity.
Step Two
Wire Drawing: The wire drawing process skillfully reduces the diameter of the steel wire through repeated cold drawing, which significantly bolsters its strength and hardness. For high-strength spring steel wire, it is crucial to maintain the outlet temperature below 150 ºC during each drawing pass to prevent strain aging and torsional cracks. Effective lubrication and cooling are essential to regulate temperature increases, ensuring optimum performance and structural integrity.
Heat Treatment: This crucial phase includes quenching and tempering. Carbon steel spring steel wires typically undergo lead bath quenching to develop a refined pearlite structure, enhancing performance. Alloy steel wires benefit from annealing heat, and stainless steel wires are treated with solid solution processes for exceptional resilience. The oil quenching process may be complemented by water quenching or water quenching with polymers to achieve superior outcomes.
Step Three
Forming: Utilizing precision equipment, we expertly wind the drawn steel wire into various spring shapes, including compression springs, tension springs, and more, catering to diverse application needs with unparalleled accuracy and efficiency.
Inspection and Packaging: Comprehensive and rigorous testing ensures that each spring steel wire adheres to stringent standard requirements. Our safe and secure packaging methods are then employed to preserve product integrity and guarantee safety during transportation and storage, delivering excellence at every stage.
Spring steel wire is a meticulously crafted steel wire, instrumental in the manufacturing of springs or model parts. Its versatile applications encompass mattress springs, subtractors, suspension springs, engine valves, and camera shutters. Quality requirements vary across types such as raw drawn, lead quenched, galvanized, and oil quenched spring steel wire, with each type specifically designed to meet unique and specific needs.
| Steel Grade GB Standard |
Carbon % |
Silicon % |
Manganese % |
Phosphorus % |
Sulphur % |
Chromium % |
Nickel % |
Cuprum % |
| 60# | 0.60-0.61 | 0.18-0.22 | 0.52-0.59 | 0.012 | 0.007 | 0.06-0.07 | 0.05 | 0.18 |
| 65# | 0.65 | 0.21 | 0.56 | 0.013 | 0.008 | 0.05 | 0.04 | 0.14 |
| 65Mn | 0.60-0.70 | 0.10-0.25 | 0.70-1.00 | 0.030 | 0.030 | 0.20 | 0.20 | 0.25 |
| 70# | 0.69-0.71 | 0.19-0.21 | 0.53-0.58 | 0.010-0.012 | 0.003-0.006 | 0.01-0.05 | 0.02-0.04 | 0.04 |
| 72A 72B | 0.72 | 0.19 | 0.71 | 0.013 | 0.006 | 0.02 | 0.02 | 0.03 |
| 80# | 0.80-0.81 | 0.22-0.24 | 0.59-0.76 | 0.008 | 0.004 | 0.04 | ||
| 82A 82B | 0.82 | 0.24-0.25 | 0.76-0.77 | 0.011-0.014 | 0.004-0.007 | 0.17-0.17 |
Tianjin Kaishuo Weiye Steel Co., Ltd. stands as a beacon of excellence and innovation in the global steel manufacturing industry. With our strong dedication to top-tier production, we as a professional manufacturer offer an extensive range of steel products. From galvanized and pre-painted galvanized steel coils to steel pipes, plates, and a vast selection of stainless steel items like sheets, pipes, profiles, bars, and coils, our expertise is unrivaled. Operating with strategic precision, our four branch offices across China complement our headquarters in Tianjin, which is the heart of our dynamic operations. Our wealth of industry experience has enabled us to forge strong alliances with stainless steel titans such as TISCO, BAOSTEEL, and POSCO (ZPSS), securing our position as a leader in high-quality steel supply. With an impressive inventory exceeding 2,000 tons and over 800 unique specifications, our superior products are highly esteemed not just across China, but also in global markets, reaching elite destinations such as Saudi Arabia, Yemen, the UAE, Syria, Kuwait, Lithuania, Azerbaijan, Russia, Indonesia, Vietnam, Egypt, Malaysia, the Philippines, Bolivia, and Colombia. Our steadfast commitment to excellence propels us forward, ensuring our position at the forefront of the industry.
Driven by an unyielding commitment to exceptional quality control and outstanding customer service, our proficient team is always prepared to meet your expectations and ensure your complete satisfaction. We are passionately focused on expanding our global influence and are eager to cultivate enduring partnerships worldwide. If you are considering a future collaboration with us, we warmly invite you to contact us to explore potential opportunities. We also extend a cordial invitation to you to visit our state-of-the-art production facilities at your convenience, offering a unique glimpse into our pioneering operations and commitment to excellence.
1. Our company boasts state-of-the-art manufacturing facilities strategically located in Shandong, Hebei, and Zhejiang, China. Each facility spans a massive 70,000 square meters and is equipped with advanced processing machinery, including large shearing machines, circular shearing devices, straightening machines, annealing furnaces, as well as punching and shearing production lines.
2. With an impressive annual inventory exceeding 10,000 tons, we are fully equipped to meet the diverse demands of our global market clientele. Our expansive sales network has reached over 100 countries, including Brazil, Peru, Cameroon, Senegal, Ghana, Botswana, Samoa, Russia, Thailand, India, and many more.
3. Our products stand out with internationally recognized certifications, including ISO9001, SGS, JIS, and BV. Each product is accompanied by a detailed product inspection report, providing thorough support for customer evaluations and ensuring unparalleled quality assurance.
4. With a robust and readily available inventory, we ensure prompt order fulfillment with direct shipping capabilities. Our dedicated 7*24 hours online service, coupled with a professional sales and after-sales support team, is committed to resolving any issues you may encounter.
5. We uphold a rigorous quality control system, offering the flexibility to customize products to your precise specifications. We guarantee competitive pricing without compromising on quality. Contact us now to discover additional discounts and special offers.
1. who are we?
We are based in TianJin, China, start from 2021,sell to Africa(20.00%),Mid East(15.00%),South America(10.00%),Eastern Europe(5.00%),Southeast Asia(5.00%),Oceania(5.00%),Southeast Asia(10.00%),Central America(5.00%). There are total about 11-50 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Cold Rolled Steel Coil,Steel Pipe,Galvanized Steel Coil,Stainless Steel Plate/Sheet,Seamless Steel Tube
4. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow;
Language Spoken:English,Chinese,Spanish,Portuguese,French,Russian
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