جودة صب سبائك النيكل & المسبوكات سبائك الكوبالت مصنع

High manganese steel impact plate: ZGMn13 water-toughened, impact-resistant and wear-resistant, doubles the life of crushing hard rock High-manganese steel impact plates (represented by ZGMn13), thanks to the unique properties imparted by the hydro-toughening process, have become core wear-resistant components in equipment used to crush hard rock (such as granite, basalt, and iron ore). Their impact and wear resistance directly doubles their service life. The following provides a detailed analysis of the material properties, process principles, performance advantages, and application value: I. Core Foundation: The "Performance Binding" of ZGMn13 High-Manganese Steel and Hydro-TougheningZGMn13 is a typical austenitic high-manganese steel with a carbon content of 1.0%-1.4% and a manganese content of 11%-14%. This high carbon and manganese ratio is a prerequisite for its impact and wear resistance, but hydro-toughening (solution treatment followed by water quenching) is required to activate these properties. Hydraulic Toughening Process Principle:ZGMn13 castings are heated to 1050-1100°C and held for a sufficient period (usually 2-4 hours) to allow the carbides (such as The Fe₃C and Mn₃C) are completely dissolved into the austenite matrix, forming a uniform single-phase austenite structure. The steel is then rapidly cooled in water (water quenching) to inhibit carbide precipitation during the cooling process. Performance changes after treatment:Untreated ZGMn13: Carbides are distributed in a network or blocky pattern at the grain boundaries, making the material brittle (hardness approximately 200 HB), easily fractured by impact, and exhibiting poor wear resistance. After water quenching: A pure austenite structure is obtained, with hardness reduced to 180-220 HB and toughness significantly improved (impact toughness αk ≥ 150 J/cm²). It also exhibits "work hardening" properties—the core mechanism of its impact and wear resistance. II. Key Performance Advantages: Dual-Core "Impact Resistance + Wear Resistance" for Hard Rock CrushingDuring the hard rock crushing process, impact plates must withstand high-frequency, high-energy rock impacts (impact forces reaching thousands of Newtons), as well as sliding friction and compressive wear from the rock. The water-toughened ZGMn13's performance precisely matches this operating condition:Impact Resistance: "Toughness for Impact Resistance, Preventing Fracture"The water-toughened single-phase austenite structure is extremely tough, absorbing the energy generated by hard rock impacts without cracking or breaking. Compared to ordinary wear-resistant steels (such as NM450), ZGMn13's impact toughness is 3-5 times greater, enabling it to withstand the "instantaneous impact loads" of hard rock crushing, preventing premature failure of the impact plate, such as edge collapse and cracking. Wear Resistance: "Work Hardening + Dynamic Wear Resistance" ZGMn13's wear resistance doesn't rely on its initial high hardness, but rather on the "work hardening effect under impact load."When hard rock impacts or squeezes the impact plate surface, the austenite matrix undergoes plastic deformation, and carbon atoms aggregate at dislocations to form martensite and carbides. The surface hardness rapidly increases from 200HB to 500-800HB, creating a tough, wear-resistant surface layer.After the surface layer wears away, the unhardened austenite matrix beneath remains exposed, hardening again during subsequent impacts, achieving "dynamic wear resistance." This "hardening with use" property perfectly adapts to the "impact-wear cycle" of hard rock crushing, avoiding the shortcomings of ordinary steels: fixed hardness and irreversible wear. Synergistic Impact and Wear Resistance: Avoiding "Single Performance Weakness" In hard rock crushing, "purely hard and brittle materials" (such as high-chromium cast iron) have high initial hardness but poor impact resistance and are prone to cracking. "Purely tough materials" (such as ordinary carbon steel) resist impact but have low hardness and are prone to wear and failure. ZGMn13, through water-toughening treatment, achieves a combination of "tough matrix + dynamically hardened surface layer," achieving both impact and wear resistance, resolving the contradiction between "hard but brittle, tough but soft." III. Application Value: The Core Logic of "Double the Lifespan" in Hard Rock Crushing In hard rock crushing equipment (such as impact crushers and hammer crushers), the "doubling of the lifespan" of the ZGMn13 water-toughened impact plate is not an exaggeration; it demonstrates performance advantages based on actual operating conditions: Reducing premature failure and extending effective service life Ordinary wear-resistant steel (such as Q355 with a welded wear layer) is prone to fracture due to insufficient impact resistance under hard rock impact (typically a failure period of 1-2 months). The ZGMn13 impact plate, with its high toughness, avoids this premature failure. Furthermore, the work-hardening effect slows wear, resulting in an effective service life of 3-6 months, effectively doubling its lifespan. Reduced O&M costs and improved equipment efficiency.Reduced replacement frequency: Doubling the lifespan means 50% fewer impact plate replacements, reducing downtime for disassembly and assembly (each replacement requires 4-8 hours), and improving equipment efficiency.Reduced spare parts consumption: No need to frequently purchase and stockpile spare parts, reducing inventory and procurement costs.Suitable for high-load crushing: Maintains stable performance even when crushing high-hardness basalt and granite (Mohs hardness > 7), avoiding problems such as substandard crushed product particle size and production interruptions caused by component failure. IV. Usage Precautions: Ensure full performanceMust match "impact load conditions"Work hardening of ZGMn13 requires sufficient impact energy (generally requiring an impact stress ≥ 200 MPa). If used for crushing soft rock (such as limestone) or low-impact conditions, the hardening effect is insufficient and wear resistance is significantly reduced. In these cases, high-chromium cast iron is more economical. Avoid use in low-temperature environments.Water-toughened ZGMn13 steel is susceptible to "austenite low-temperature embrittlement" below -40°C, resulting in a sharp drop in impact toughness. Therefore, it is unsuitable for outdoor crushing equipment in cold regions. (High-manganese steel with improved low-temperature toughness, such as ZGMn13Cr2, should be used.) Control the particle size of the crushed material.Although it has strong impact resistance, it should be avoided from direct impact with oversized hard rock (such as boulders larger than the feed opening) to prevent localized excessive deformation or matrix damage, which would affect the overall lifespan.In summary, the ZGMn13 water-toughened high-manganese steel impact plate, through the combination of "water-toughening to activate toughness + work-hardening to enhance wear resistance," precisely addresses the dual requirements of "impact resistance" and "wear resistance" in hard rock crushing, ultimately doubling its lifespan. It is a core and preferred component for hard rock crushing in industries such as mining, building materials, and metallurgy. Email: cast@ebcastings.com

Tin-phosphor bronze bushings for wet environments: resistant to rust and moisture, ideal for hydraulic equipment bushings and cooling tower sliders Tin-phosphor bronze bushings, due to their outstanding resistance to rust and moisture, are the preferred material for hydraulic equipment bushings and cooling tower sliders. The reasons are as follows: Excellent Rust and Moisture Resistance: The phosphorus in tin-phosphor bronze forms a stable compound with copper, effectively resisting oxidation and corrosion in humid environments, making them less susceptible to rust and corrosion. They can withstand prolonged exposure to freshwater, seawater, or the humid water vapor of cooling towers, which is common in hydraulic equipment, significantly slowing the progression of corrosion and extending their service life. Excellent Wear Resistance: Bushings for hydraulic equipment and cooling tower sliders are subject to constant friction. Tin-phosphor bronze materials like CAC902 offer excellent wear resistance and can withstand significant frictional wear. This reduces dimensional change caused by excessive wear, preventing abnormal clearance expansion that can lead to vibration, noise, and even mechanical failure. Self-lubricating: Tin-phosphor bronze bushings maintain excellent sliding performance without frequent lubrication and maintenance. They are self-aligning, insensitive to deflection, and capable of simultaneously supporting radial loads. Humidity can easily cause lubricant effectiveness to deteriorate or even dissipate. Its self-lubricating advantages are even more pronounced in such environments, reducing the likelihood of component damage due to lubrication issues and reducing downtime for lubrication and maintenance. Excellent mechanical strength and toughness: Its suitable strength, hardness, and good toughness withstand shock loads such as water flow and pressure fluctuations during operation of hydraulic equipment. It is also less susceptible to cracking or sudden breakage during the vibrations caused by cooling tower fan startup and shutdown, ensuring stable and reliable equipment operation and reducing unplanned downtime for maintenance. Easy to process and mold: Its excellent machinability and casting properties make it easy to manufacture to the complex shapes and dimensional precision requirements of hydraulic equipment shaft sleeves, cooling tower sliders, and other applications. This meets diverse design requirements while ensuring the dimensional accuracy of bushings and achieving tight fit.

Tin-phosphor bronze resists rust, reduces bushing replacement frequency in humid environments, and reduces maintenance costs Tin-phosphor bronze bushings in hydraulic cooling towers, thanks to their corrosion resistance, can reduce bushing replacement frequency and lower maintenance costs. This is specifically reflected in the following aspects: Rust resistance contributes to long service life: Tin-phosphor bronze boasts excellent corrosion resistance, resisting erosion by moisture and cooling water. Hydraulic cooling towers are subject to high moisture content, and cooling water often contains minerals and trace chemicals, which can easily corrode and damage ordinary metal bushings. However, tin-phosphor bronze bushings are less susceptible to these effects, maintaining stable performance and minimizing the need for replacement due to corrosion. Their stable rust resistance is key to achieving a long service life. Wear resistance and stability: In addition to corrosion resistance, tin-phosphor bronze boasts excellent wear resistance, maintaining stability under high loads and resisting surface cracking and fatigue damage. Bushings in cooling tower fan shafts and sliding parts of transmission structures are subject to friction and loads during operation. Their wear resistance reduces wear rates and maintains a stable sliding fit, thereby reducing the frequency of bushing replacements due to increased clearance caused by excessive wear. Self-lubrication reduces maintenance dependency: Its self-lubricating properties reduce lubrication requirements. In humid environments, lubricants are easily affected by moisture, dilute them, or wash away. Even when insufficiently lubricated, tin-phosphor bronze's inherent properties prevent dry friction, reducing the likelihood of bushing failure due to lubrication issues. This reduces the frequency of lubrication maintenance and premature bushing replacement due to accelerated wear caused by poor lubrication, thereby reducing labor and lubricant costs. Mechanical strength resists impact damage: Tin-phosphor bronze's excellent strength and toughness allow the bushing to withstand impact loads and vibrations generated by water flow fluctuations and fan startup and shutdown. The bushing is highly resistant to breakage or cracking, minimizing the need for replacement due to unplanned failures, ensuring equipment reliability, and reducing the high maintenance costs associated with unplanned downtime for component replacement.

Tin phosphor bronze anti-corrosion bronze bushings for wet environments, specially designed for sliding parts of cooling towers of water conservancy equipment Tin-phosphor bronze bushings are suitable for use in humid environments, such as hydraulic equipment and cooling tower sliding parts, primarily due to their outstanding corrosion resistance and other compatible performance characteristics. Details are provided below: Rust Resistance of Tin-Phosphor BronzeTin-phosphor bronze is a bronze alloy containing tin and phosphorus. It forms a stable oxide film in humid environments, resisting corrosion from corrosive media such as freshwater, seawater, and some humid air containing acids and alkalis. Therefore, it is suitable for hydraulic equipment exposed to flowing water and cooling towers exposed to humid, vaporous conditions, preventing rust from causing bushing failure or disrupting operation. Other Compatible Properties Low Friction Coefficient: Tin-phosphor bronze's low friction coefficient facilitates the operation of sliding parts in hydraulic equipment and cooling towers, reducing energy loss and preventing the adverse effects of frictional heat accumulation. Furthermore, it is compatible with a variety of lubricants, maintaining low friction even when lubrication is insufficient.Excellent Wear Resistance: This type of bushing offers excellent wear resistance and performs well under high loads and frequent movement. Rotating shafts in hydraulic equipment and rotating or sliding components in cooling towers frequently rub against bushings during long-term operation. Tin-phosphor bronze bushings can extend their service life. High strength and toughness: They can withstand the impact loads and pressure fluctuations associated with hydraulic equipment operation. Their toughness makes them less susceptible to cracking or breakage caused by vibration and frequent starts and stops, ensuring reliable service in the sliding parts of the equipment. Common Grades and Specific AdvantagesZCuSn10P1: Contains approximately 10% tin and 1% phosphorus, offering outstanding hardness, wear resistance, and fatigue strength. It is suitable for high-load (>20 MPa) and high-speed (>8 m/s) sliding applications, such as high-power hydraulic pumps and high-power cooling tower fans.ZCuSn5Pb5Zn5: Contains 5% tin, 5% lead, and 5% zinc, offering excellent castability and a dense structure. The lead enhances self-lubrication, enabling operation in dirty and humid conditions. It is suitable for sliding parts with poor lubrication conditions or exposure to impure moisture.

الصخر الصلبمطاحن الكرة, عند التعامل مع الطحن الخشن الشاق للجرانيت والبازلت والمواد الأخرى، تتطلب بطانات ذات مقاومة عالية للصدمات والتآكل. البطانات المناسبة مصنوعة عادة من المواد التالية: فولاذ عالي المنغنيز: ZGMn13 و ZGMn13Cr2: فولاذ عالي المنغنيز يحتوي على ما يقرب من 13٪ من المنغنيز، مما يظهر صلابة عالية وخصائص تصلب العمل. تزداد صلابة سطحه بسرعة بعد التأثير. ZGMn13Cr2 هو فولاذ عالي المنغنيز معدل مع إضافة Cr لتعزيز خصائص تصلبه، مما يجعله أكثر مقاومة للتآكل ومناسبًا لغرف الطحن الخشنة المعرضة لتأثيرات عالية وتأثير متكرر بين وسائط الطحن والمادة. ومع ذلك، يتطلب تصلبه تأثيرًا كافيًا؛ خصائصه المقاومة للتآكل محدودة عندما يكون التأثير ضعيفًا. ZGMn17Cr2: فائقبطانة فولاذية عالية المنغنيز مع زيادة محتوى المنغنيز بحوالي 17٪ وإضافة Cr. بالمقارنة مع سلسلة ZGMn13، فإنه يتصلب العمل بشكل أسرع، ويحقق صلابة سطح أعلى، ويوفر مقاومة محسنة للتآكل والتأثير. حديد الزهر عالي الكروم:KmTBCr15Mo2: تتجاوز صلابة الكربيد HV1200، مما يوفر مقاومة قوية للتآكل ومناسبًا لمكافحة تآكل الجرانيت والبازلت. يحسن محتوى Mo الصلابة ويقلل من خطر الكسر الناتج عن الصدمات، لكن صلابته الإجمالية أقل من صلابة الفولاذ عالي المنغنيز. غالبًا ما يستخدم بالاقتران مع مواد أكثر صلابة أو لتطبيقات الطحن الخشن ذات التأثير الأقل حدة. KmTBCr26: يؤدي محتواه العالي من الكروم إلى توزيع أكثر وفرة وكثافة للكربيدات، مما يؤدي إلى مقاومة للتآكل أكبر عدة مرات من مقاومة الفولاذ عالي المنغنيز. ومع ذلك، يمكن أن يؤدي زيادة محتوى الكروم إلى تقليل الصلابة. غالبًا ما يخضع للتعديل أو التلقيح أو التركيب مع البطانات الفولاذية لتقليل الهشاشة وإطالة عمر الخدمة. فولاذ متوسط السبائك المطفأ بوسطين: من خلال نسبة سبائك علمية وعملية إخماد بوسطين، يحقق هذا الفولاذ توازنًا في الصلابة من HRC45-55 وصلابة تأثير تزيد عن 25J. يمكن أن يكون عمر خدمته أكثر من ضعف عمر البطانات الفولاذية عالية المنغنيز، وقدرته على الحفاظ على شكل السطح بثبات، وقدرته على زيادة إنتاج المطحنة بأكثر من 5٪. يمكن أن تتكيف بمرونة مع بيئات متنوعة مثل الطحن الرطب والجاف في التعدين. بالإضافة إلى ذلك، من حيث التصميم الهيكلي، غالبًا ما تستخدم البطانات شديدة التحمل للطحن الخشن للصخور الصلبة أشكالًا خاصة مثل الألواح المقعرة المحدبة أو البطانات ذات قمة الموجة. بمساعدة الاحتكاك بين المقعر والمحدب، يمكن تعزيز تأثير التكسير والطحن للمواد الصلبة.