Mga Cast Crane Sheaves: Mga Solusyong Mabisa at Nako-customize

Pagpapakilala ng Produkto ng Cast Crane Sheaves

Cast crane sheaves are a production process in which metal is smelted into a molten state that meets specified requirements and then poured into the mold for casting. After cooling, solidification, and cleaning, the pulley’s predetermined shape, size, and performance are achieved. Because the casting pulley blanks are almost fully formed, free machining or small-scale machining is used, reducing costs and production time to some extent. This method offers low production costs and high efficiency. For some pulley products with large size, irregular shape, and complex structure, casting is an ideal production method. Pulley casting is the basic process of the modern device manufacturing industry.

Klasipikasyon ng mga Cast Crane Sheaves

Mga Sheaves ng Crane na Hinubog na Bakal

• Kapasidad: Hanggang 200t
• Mataas na katigasan: Ang materyal na ZG25Ⅱ ay may mataas na densidad at napakataas na katigasan.
• Magandang resistensya sa pagkasira: medyo mas mataas ang sarili nitong densidad, mataas ang resistensya sa pagkasira, at mas malakas ang kapasidad sa pagdadala.
• Magandang tibay at magaan na timbang: mahusay na mekanikal na tibay at malakas na resistensya sa epekto.

Mga Sheaves ng Crane na Cast Iron

• Kapasidad: Hanggang 100t
• Medyo maliit ang pagkasira ng wire rope: the HT250 material contains graphite and has self-lubricating properties, which effectively reduce friction and provide good shock-absorption performance.
• Matipid: Ang proseso ng paghahagis ng buhangin ay simple at ang mga hilaw na materyales ay malawak, na makabuluhang binabawasan ang gastos sa pagkuha habang natutugunan ang mga karaniwang kinakailangan.

Mga Kalsada ng Crane na Hinubog na Bakal

Cast SteelCrane Sheaves Introduction

Cast steel crane sheaves have higher strength and can withstand greater tensile pressure, but the wear on the wire rope is greater than that of cast iron sheaves. It is ideal for occasions with high operating conditions. Standard cast steel pulleys generally use lost foam casting, which has a low production cost and high efficiency. For some pulley products with large size, non-standard shape and complex technology, cast steel pulleys are an ideal way to make them. Moreover, the lost foam casting method is used, and the pulley is not limited by the equipment in terms of diameter and other dimensions, which is more flexible. However, due to the influence of factors such as casting technology, the quality directly depends on the quality of the casting blank.

Bakal na Hinubog Mga Kalamangan ng Crane Sheaves

Pinahusay na Katigasan at Plastikidad 

Ang mga cast steel crane sheaves ay ginawa gamit ang mga katangian ng materyal na katulad ng high-grade steel. Ang mga ito ay may mas mataas na tigas at superior na flexibility kumpara sa cast iron, na nagreresulta sa mas mataas na plasticity at impact resistance. Ginagawa nitong lubos silang maraming gamit para sa mas malawak na hanay ng mga pang-industriya na aplikasyon.

Magaang Disenyo para sa Kahusayan sa Operasyon 

Dahil sa mas mababang densidad ng cast steel kumpara sa tradisyonal na bakal, ang mga cast steel crane sheaves ay mas magaan para sa parehong volume. Sa mga operasyon ng pagbubuhat, kung saan ang movable pulley ay naglalakbay kasama ng karga, ang mas magaan na sheave ay nakakabawas sa pagkonsumo ng enerhiya at intensidad ng manu-manong paggawa, na nagpapaliwanag sa malawakang paggamit nito kaysa sa mga alternatibong cast iron.

Paglaban sa Kaagnasan at Pinahabang Buhay ng Serbisyo 

Habang ginagamit, ang mga sheaves ng cast steel crane ay nagkakaroon ng natural na proteksiyon na patong sa ibabaw na nagpoprotekta sa bahagi mula sa ulan at kemikal na pagguho. Hindi tulad ng cast iron, na madaling kalawangin at masira ang istruktura kapag nalantad sa kahalumigmigan, pinapanatili ng cast steel ang integridad nito, na nag-aalok ng mas mahabang buhay ng serbisyo.

Advanced Wear Resistance sa pamamagitan ng Flame Hardening 

Sa pamamagitan ng pag-optimize ng nilalaman ng carbon, ang lakas ng istruktura ng mga sheaves na ito ay higit na nakahigit sa bakal. Sa partikular, sa pamamagitan ng flame quenching, ang katigasan ng ibabaw ay umaabot sa HRC48–HRC52, na nagpapahaba sa buhay ng pagkasira ng higit sa 30%.

Na-optimize na Distribusyon ng Stress para sa Mabigat na Pagbubuhat 

Featuring a dual-hub design, these sheaves uniformly disperse stress across the structure. This makes them the definitive choice for high-tonnage lifting operations where structural reliability is non-negotiable. Optional configurations with tapered roller bearings or sliding bearings support a wide operating temperature range from -40°C to 200°C. Fully ISO 14001 certified, these cast steel crane sheaves are the ideal choice for extreme environments such as metallurgical blast furnaces and offshore oil drilling platforms.

Cast Steel Crane Sheaves Application

Mga Sheaves ng Crane na Cast Iron

Panimula sa Cast Iron Crane Sheaves

Cast iron crane sheaves uses gray cast iron (HT15-33) or ductile iron (QT-10). The pulley has good process performance and is easy to cut, especially the wear on the wire rope is small, but because of its low strength and brittleness, poor durability, it can easily cause rim fracture and crushing when used, and it is more economical and ideal for small tonnage or infrequent equipment use. Cast iron crane sheaves use sand-cast iron casting technology; cast iron is an ideal material for making crane pulleys because of its good fluidity during casting and relatively few casting defects.

Cast Iron Crane Sheaves Advantage

• Mataas na kapasidad sa pagdadala at katatagan: High-quality cast iron materials coupled with heat treatment technology ensure reliable carrying capacity.The recommended static safety factor is ≥3 (depending on the application conditions).
• Mahabang buhay ng serbisyo: Ang grapayt sa cast iron ay nagbibigay ng natural na pagpapadulas, kasama ng quenching, tempering at shot peening treatment, na maaaring makabawas sa friction at surface wear.
• Matipid na pagmamanupaktura: The casting process can achieve integrated, complex geometries, and reduce unit costs in large-scale production.

Cast Iron Crane Sheaves Application