撒布板作為各類散料輸送、攤鋪設備的關鍵部件，其耐磨層的材料厚度直接影響使用壽命和作業效率，合理的厚度設計需結合使用場景、物料特性等多方面因素綜合考量。

　　As a key component of various bulk material conveying and paving equipment, the thickness of the wear-resistant layer of the spreading board directly affects its service life and operational efficiency. Reasonable thickness design needs to be comprehensively considered in combination with various factors such as usage scenarios and material characteristics.

　　耐磨層材料厚度的確定與使用環境密切相關。在輸送硬度較高的物料（如礦石、砂石）時，耐磨層需具備足夠厚度以抵抗物料的持續沖刷和撞擊，通常厚度在 5-15 毫米之間。若物料顆粒較大且棱角分明，會加劇耐磨層的磨損，此時厚度需取上限；而輸送煤粉、谷物等較軟物料時，厚度可適當減薄至 3-8 毫米，既能滿足耐磨需求，又能避免材料浪費。此外，撒布板的作業頻率也會影響厚度選擇，長期連續作業的設備，耐磨層厚度需增加 2-3 毫米以延長更換周期。

　　The determination of the thickness of the wear-resistant layer material is closely related to the usage environment. When transporting materials with high hardness, such as ore and sand, the wear-resistant layer needs to have sufficient thickness to resist continuous erosion and impact of the material, usually between 5-15 millimeters in thickness. If the material particles are large and angular, it will intensify the wear of the wear-resistant layer, and the thickness should be taken as the upper limit at this time; When conveying softer materials such as coal powder and grains, the thickness can be appropriately reduced to 3-8 millimeters, which can meet the wear resistance requirements and avoid material waste. In addition, the frequency of the spreading board operation will also affect the thickness selection. For equipment that operates continuously for a long time, the thickness of the wear-resistant layer needs to be increased by 2-3 millimeters to extend the replacement cycle.

　　不同材質的耐磨層對厚度要求存在差異。采用高鉻鑄鐵作為耐磨層時，因其硬度高但韌性較低，厚度通常控制在 8-12 毫米，過厚易導致脆性斷裂；而采用雙金屬復合層（基層為普通鋼材，表層為耐磨合金）時，耐磨層厚度可根據需求調整，一般表層厚度占總厚度的 1/3-1/2，既保證耐磨性，又借助基層的韌性防止整體開裂。陶瓷耐磨層雖硬度極高，但脆性較大，厚度多在 3-6 毫米，且需與基層緊密結合，避免因厚度過大導致脫落。

　　There are differences in the thickness requirements for wear-resistant layers made of different materials. When using high chromium cast iron as the wear-resistant layer, due to its high hardness but low toughness, the thickness is usually controlled at 8-12 millimeters, and excessive thickness can easily lead to brittle fracture; When using a bimetallic composite layer (with ordinary steel as the base layer and wear-resistant alloy as the surface layer), the thickness of the wear-resistant layer can be adjusted according to the needs. Generally, the thickness of the surface layer accounts for 1/3-1/2 of the total thickness, which ensures wear resistance and prevents overall cracking with the help of the toughness of the base layer. Although the ceramic wear-resistant layer has extremely high hardness, it is brittle and has a thickness of 3-6 millimeters. It needs to be tightly bonded with the base layer to avoid detachment due to excessive thickness.

　　厚度的均勻性對耐磨效果至關重要。耐磨層在制作過程中若厚度不均，局部較薄的區域會先出現磨損穿孔，進而影響整個撒布板的使用壽命。因此，加工時需通過精準的模具設計或激光熔覆等工藝控制厚度偏差，通常允許偏差不超過 ±0.5 毫米。對于大面積撒布板，可采用分段設計，根據不同區域的磨損程度調整厚度，例如物料沖擊集中的邊緣部位厚度比中間區域增加 2-3 毫米，實現材料的高效利用。

　　The uniformity of thickness is crucial for the wear resistance effect. If the thickness of the wear-resistant layer is uneven during the production process, locally thinner areas will first experience wear and perforation, which will affect the service life of the entire spreading board. Therefore, during processing, it is necessary to control the thickness deviation through precise mold design or laser cladding processes, usually allowing a deviation of no more than ± 0.5 millimeters. For large-area spreading boards, segmented design can be adopted to adjust the thickness according to the degree of wear in different areas. For example, the thickness of the edge area where material impact is concentrated can be increased by 2-3 millimeters compared to the middle area, achieving efficient utilization of materials.

　　厚度檢測需采用專業方法。常用的無損檢測手段包括超聲波測厚儀，通過探頭向耐磨層發射超聲波，根據反射波的傳播時間計算厚度，檢測時需在不同位置選取多個測點，取平均值作為最終結果，確保數據代表性。對于新制作的撒布板，還可通過截面切割法進行破壞性檢測，直接測量耐磨層與基層的厚度比例，驗證是否符合設計要求。使用過程中，定期檢測厚度變化可預判更換時間，當局部厚度磨損至初始厚度的 1/3 時，需及時修復或更換，避免基層受損。

　　Thickness detection requires professional methods. The commonly used non-destructive testing methods include ultrasonic thickness gauges, which emit ultrasonic waves to the wear-resistant layer through a probe, calculate the thickness based on the propagation time of the reflected waves, and select multiple measuring points at different positions during testing. The average value is taken as the final result to ensure data representativeness. For newly made spreading boards, destructive testing can also be carried out through cross-sectional cutting method, directly measuring the thickness ratio of the wear-resistant layer to the base layer to verify whether it meets the design requirements. During use, regular monitoring of thickness changes can predict the replacement time. When the local thickness wears down to one-third of the initial thickness, it needs to be repaired or replaced in a timely manner to avoid damage to the base layer.

　　厚度與成本及性能的平衡是關鍵。盲目增加厚度雖能延長壽命，但會增加材料成本和撒布板自重，影響設備的運行能耗；厚度不足則會導致頻繁更換，增加停機維護時間。因此，需結合設備的作業強度、物料特性及維護周期，計算經濟合理的厚度值。例如，用于市政道路攤鋪的撒布板，因作業周期穩定且物料為瀝青混合料，耐磨層厚度設定為 6-8 毫米即可平衡成本與性能。

　　The balance between thickness, cost, and performance is crucial. Blindly increasing the thickness can prolong the service life, but it will increase material costs and the weight of the spreading board, affecting the energy consumption of equipment operation; Insufficient thickness can lead to frequent replacement and increase downtime for maintenance. Therefore, it is necessary to calculate an economically reasonable thickness value based on the operating intensity, material characteristics, and maintenance cycle of the equipment. For example, the spreading board used for municipal road paving can balance cost and performance by setting the wear-resistant layer thickness to 6-8 millimeters due to its stable operation cycle and the use of asphalt mixture material.

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