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一、柱塞偶件1．柱塞偶件的磨损特征柱塞偶件的磨损,主要集中于柱塞头部、过梁处、停供边及柱塞的进回油孔处。(1)柱塞头部。此处磨损最大,在接触面上有上深下浅、上粗下细的沟痕,磨损处呈乳白色,在光照下尤为明显。沟痕最大深度可达23-25μm,最大宽度为4～5mm,长度为10 mm左右。(2)柱塞头部过梁。此处的磨损较柱塞头部小,多呈梳状不深的细沟纹,同样上深下浅,上粗下细。(3)柱塞停供边。从斜槽上边缘向上磨损逐渐减小,磨损宽度为5mm左右,呈乳白色,同时停供边的棱磨钝变圆。(4)柱塞下部台肩。此处磨损很小,仅在台肩圆周上有短细纹。(5)柱塞套。磨损主要在进回油孔附近,且进油孔处比回油孔处大。进油孔的磨损部位在沿孔的中心线附近,上部磨损从孔上边缘开始向上延伸6～7mm,深24～27μm,下部从孔下边缘开始向下延伸4．5 mm,深15～17μm,磨损宽度较孔径大。
First, the plunger coupling 1. Wear characteristics of the plunger coupling Plunger wear parts, mainly concentrated in the plunger head, the beam at the stop for the edge and the plunger back to the oil hole. (1) plunger head. Here wear the largest in the contact surface on the deep under the shallow, coarse rough thin trench marks wear milky white, especially in light. The maximum depth of groove marks can reach 23-25μm, the maximum width of 4 ~ 5mm, the length of about 10mm. (2) plunger head beam. The wear here is smaller than the plunger head, most of the hair is thin comb-shaped groove, the same on the deep under the light, rough fine. (3) plunger stop edge. From the upper edge of the chute upward wear gradually reduced, the wear width of about 5mm, was milky white, while stopping the edge of the edge of the oblate blunt round. (4) lower plunger shoulder. The wear is small here, with short lines on the shoulder circumference only. (5) plunger sleeve. The main wear and tear in the back near the oil hole, and into the oil hole than the back hole at large. The wear area of the oil inlet hole is near the centerline of the hole. The upper wear extends 6-7 mm deep and 24-27 μm deep from the upper edge of the hole, and the lower portion extends 4.5 mm deep and 15-17 μm deep from the lower edge of the hole , Wear width larger than the aperture.