圆盘式高速金属冷锯机锯切功率的实验研究

对１６００圆盘式高速金属冷锯机进行了锯切功率的实验研究。对某厂四种有代表性的产品，用不同的进锯速度，实测每种条件下的锯切功率变化，和最大瞬时锯切功率与平均锯切功率之比。并以实测数据为基础，得出每种产品以进锯速度为自变量的平均锯切功率回归公式。这些工作，不仅可以为这种冷锯机锯切功率的理论研究提供依据，还可直接为使用和设计这种冷锯机给出具体参考数据。     

低成本改造焊管定尺锯切系统

介绍了一项低成本改造焊管定尺锯切系统的技术。该技术以PLC为控制中心,旋转编码器、接近开关为检测元件,采用机电结合的方法,解决了老式焊管定尺锯切系统普遍存在的定尺不准、可靠性差等问题。新系统控制可靠,工作稳定,定尺误差为±5mm,改造成本2万元左右,能够满足生产的需要。     

锯机进给自动同步系统的研究

本文研究了圆盘锯机进给自动同步系统，可在不停产的条件下进行改造，此系统已成功地应用于生产，明显地提高了生产率和经济效益，具有推广价值。     

Basic Mechanisms and Models of Multi‐Wire Sawing

More than 80 % of the current solar cell production requires the cutting of large silicon crystals. While in the last years the cost of solar cell processing and module fabrication could be reduced considerably, the sawing costs remain high, about 30 % of the wafer production. At present the large crystals are cut using the multi‐wire slicing technology^[2] which has the advantage of a high throughput (several hundred wafers per day and machine), a small kerf loss of about 200 μm and almost no restrictions on the size of the ingots. Basic knowledge about the microscopic details of the sawing process is required in order to slice crystals in a controlled way. In the following the principles of the sawing process will be described in this review article as far as they are understood today.     

浅谈企业供电初步设计

以煤矿为例，介绍了企业供电初步设计的全过程，对于其它企业及民用建筑群的供电初设都有一定的借鉴意义。     

弧面石材垂直往复式锯机特性分析

本分析了锯切弧面石材的HSJ—I型垂直往复式锯机工作原理、结构及性能的特点，地解决了弧面石材的锯切加工，对于中小型石材加工厂具有使用价值。     

石板材砂锯加工中钢砂破岩运动形态的研究

石板材砂锯加工机理较为复杂,迄今缺乏系统的研究。本文通过单颗粒模拟锯切实验,借助扫描电镜(SEM)和立体显微镜的观察分析,对锯切过程中钢砂的破岩运动形态进行了较为深入的研究。文章根据钢砂的受力情况,较详尽地分析了影响钢砂运动状态的诸因素,探讨了加工中不同运动状态钢砂所占比例的估算方法,最后讨论了钢砂各运动形态对锯切过程的影响。文中所得结果对进一步研究砂锯锯切过踞,探索加工工艺的改进,具有一定的意义。     

实现花岗石高效锯切的关键因素分析

分析了锯切花岗石过程中金刚石节块磨损机理。探讨了不同品质金刚石的失效特点及其对结合剂的要求,指出在同一节块中使用混合品质金刚石是造成金刚石非正常失效的直接原因。在分析了锯切中节块表面载荷分布特征的基础上,提出沿节块表面不同载荷区域使用不同品质金刚石和相应结合剂系统。试验结果表明,在节块成本和节块耐磨度不变的前提下,金刚石非正常失效率大大下降,锯切效率提高了60%。     

锯槽法造塑性砼防渗墙在大坝防渗处理中的应用

当前,中小型水库除险加固工作都涉及到大坝防渗问题.锯槽法建造塑性砼防渗墙在竹坑水库大坝加固中的应用是成功的,为其他类似水库大坝除险加固积累了经验.     

Mechanistic cutting force model in band sawing

In order to establish a mechanistic model of cutting force, specific cutting pressure was first obtained through cutting experiments. The band sawing process is similar to milling in that it involves multi-point cutting, so it is not an easy matter to evaluate specific cutting pressure. This was achieved by making the thickness of workpiece smaller than one pitch of the saw tooth, analogous to fly cutting in the face milling process. Then the cutting force was predicted by analysing the geometric shape of a saw tooth. The tooth shape used was the raker set style that is generally used in band sawing. A set of teeth comprises three teeth, ranked as left, straight, and right. The mechanistic model developed in the research considered the shape of each tooth in a set. The predicted cutting forces coincided well with those measured in the validation experiment. Therefore, the predicted cutting forces in band sawing can be used for the adaptive control of saw-engaging feed rate in band sawing.