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槽钢剪切工艺问题分析!

来源:http://www.jnlhjscl.com/ 日期:2020-11-18 发布人:adminlehao

槽钢剪切工艺问题分析

Analysis of shear process of channel steel
1、工艺原因
1. Process reason
该机组的设计才能为20万t/a,但产量到达了60万t/a,冷床区消费才能缺乏的问题很突出,与消费角钢相比,槽钢的冷却速度较慢,从而形成剪切时槽钢温度较高,极易呈现塌肩、
When the cooling rate of the channel steel reaches 600000 T / A, the cooling rate of the channel steel is very low, so the cooling rate of the channel steel can reach 600000 T / A
毛刺、撕裂等缺陷,并且对剪刃寿命的影响较大。
Burr, tear and other defects have a great impact on the life of the cutting edge.
2、剪刃设计原因
2. Reason for design of shear blade
                                           山东槽钢
槽钢剪刃设计的根本根据是槽钢废品孔型外形,如图1所示(以100#槽钢为例)。这种设计在剪切过程中易呈现以下问题:一是槽钢两肩部与其他局部相比,相对较厚,所需剪切力也较大,剪刃磨损较快,剪刃运用一段时间后。这一局部相对磨损量大,致使肩部间隙较大,易呈现塌肩现象;二是槽钢两腿与腰部处相比,由于剪切角度的影响,当剪刃磨损后,
The design of channel steel shear blade is based on the pass shape of channel steel scrap, as shown in Figure 1 (taking 100 ᦇ channel steel as an example). This design is easy to present the following problems in the process of shearing: first, the two shoulders of channel steel are relatively thick compared with other local parts, and the required shear force is larger, and the shear blade is worn quickly. After the shear blade is used for a period of time, the shear blade will wear out quickly. The second reason is that the two legs of channel steel are compared with the waist due to the influence of shear angle, and when the shear blade is worn, it is easy to collapse the shoulder,
在剪切两腿时,剪切质变小,腿部剪切由通常的剪断变成了撕断,槽钢腿端面极易呈现毛刺;三是上、下剪刃腿部斜度与槽钢废品孔型根本分歧,这样在剪切时腿部根本同时受力,
When cutting the two legs, the shearing quality becomes smaller, and the leg shearing is changed from normal cutting to tearing, and the end face of channel steel leg is easy to show burr; thirdly, the leg slope of upper and lower shear blade is fundamentally different from the channel steel scrap pass, so that the leg is subjected to force at the same time,
剪切力较大,剪刃磨损较快,一方面腿端剪切压痕严重,另一方面剪刃老化后,极易呈现槽钢剪切局部撕裂、毛刺较多的现象。后两点是影响槽钢剪切质量的主要缘由。
On the one hand, the leg end of the shear indentation is serious, on the other hand, after the shear blade aging, it is easy to show the phenomenon of local tearing and burr of channel steel. The last two points are the main reasons that affect the shear quality of channel steel.



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