Abrasion Resistant Overlay Plate
Abrasion Resistant Overlay Plate delivers superior wear resistance through a combination of high-hardness chromium carbide formation and a tough steel backing structure. Its ability to withstand sliding, влияние, and erosive wear makes it an essential material for heavy-duty industrial applications where long-term durability and reliability are required.
- Описание
Abrasion Resistant Overlay Plate is a composite wear-resistant steel product manufactured by depositing a high-hardness alloy layer onto a carbon steel or low-alloy steel base through welding overlay technology. Широко используется в горнодобывающей промышленности., цемент, производство электроэнергии, сталелитейные заводы, and bulk material handling systems where severe abrasive conditions occur.
The key value of this material lies in its exceptional ability to resist surface material loss caused by friction, влияние, и эрозия частиц.
Wear Resistance Principle
The abrasion resistance of overlay plate is achieved through a combination of hard alloy phases and a tough supporting base.
1. Армирование твердым сплавом
The overlay layer contains high levels of chromium and carbon, which form extremely hard carbide phases such as:
- Cr₇C₃
- Кр₂₃C₆
These carbide particles act as rigid barriers that resist cutting and grinding from abrasive materials.
2. Высокая твердость поверхности
The wear-resistant layer typically achieves:
- 55–65 HRC hardness
- High microhardness in carbide-rich zones
This significantly reduces surface material removal during friction and impact.
3. Dual-Layer Structure Support
The structure consists of:
- Hard overlay layer (износостойкость)
- Tough base steel (impact absorption)
The base plate prevents cracking and deformation under mechanical load, while the overlay resists surface wear.
4. Controlled Microstructure
The weld overlay process produces a controlled distribution of carbides within a metallic matrix, обеспечение:
- Uniform wear resistance
- Stable mechanical performance
- Reduced localized failure
Типы износостойкости
Abrasion Resistant Overlay Plate is designed to resist multiple wear mechanisms:
- Скользящее истирание: caused by continuous material movement across the surface
- Ударное истирание: caused by falling or striking materials
- Эрозивный износ: caused by high-speed particle flow
- Строжка износа: caused by large particle scraping
Сравнение производительности
| Свойство | Накладная пластина | Standard Carbon Steel | Износостойкая сталь |
|---|---|---|---|
| Твердость поверхности | Очень высокий | Низкий | Средний–высокий |
| Устойчивость к истиранию | Отличный | Бедный | Хороший |
| Ударопрочность | Середина | Высокий | Высокий |
| Срок службы | Очень длинный | Короткий | Длинный |
Key Factors Affecting Wear Performance
Сплав состав
Higher chromium and carbon content increase carbide formation and improve wear resistance.
Толщина наложения
Thicker wear layers provide longer service life under severe abrasion conditions.
Carbide Distribution
Uniform carbide dispersion ensures consistent wear performance across the surface.
Welding Process Control
Heat input and cooling rate affect hardness, crack resistance, and microstructure stability.
Типичные промышленные применения
Abrasion Resistant Overlay Plates are widely used in:
- Горнодобывающее оборудование
- Желоба и бункеры цементного завода
- Системы транспортировки угля
- Системы золы электростанций
- Steel mill conveyors
- Crusher and screening equipment
- Ковши экскаваторов и самосвалы
- Системы транспортировки сыпучих материалов
Преимущества в промышленном использовании
- Extremely high resistance to abrasive wear
- Long service life under harsh conditions
- Сокращение времени обслуживания и простоев
- Настраиваемая композиция наложения
- Прочная металлургическая связь с опорной плитой.
