If it is not possible to use pegs and tight wire, the scarifier cutter machine is equipped with a long linear bar positioned at the side of the machine itself and resting on the road surface, in such a way as to define a median plane that is followed by the machine in operation.

Besides these devices, which substantially control the cutting depth, there are also devices that show the inclination of the cutting drum with respect to the road surface, in such a way as to remove different quantities of asphalt on the left and on the right side of the drum, respectively, and to obtain a given road profile, for example with sloping sides. (more…)

Scarifier cutter is a kind of conservation for the removal of pavement materials, machinery, high-speed rotation of the milling cutter drum and filled with milling method using inverse removed asphalt, cement concrete pavement. Because of the complexity of material composition, high hardness, wear a sharp knife makes the most rapid consumption of wearing parts, greatly increasing the construction costs. Therefore, the strengthening of the tools of research and rational use of important economic significance.

Tool Structure and Process
Tool typical structure shown in Figure 1, mainly Cutter, knife holder and base composition. Connection as follows: base soldered directly to the milling drum, the knife block through the screw fastening the base of the slot, while the cutter head knife inserted through the spring seat up. Segment from the tip, knife handles, gaskets, and spring up composition (Figure 2). (more…)

Tool use and maintenance of Scarifier cutter

Tools and practices
It seems simple, operational efficiency and the milling depth and speed of the advance. Large milling deep, full speed ahead seems to be most productive time, but in reality not the case. Because the milling depth increased, and forward speed is bound to decrease. A 2 million milling machine milling depth and forward speed as shown in Figure 3. In addition, the milling deep and large, forward speed is small, then the small size milling waste on the tool wear is also more serious, single-output also dropped the knife. Figure 4 represents the single-Segment of a particular model to production and milling of deep relationship. Can be seen, sometimes layered milling but more economical.

Tool Wear
Tools, in particular, Cutter, life is very low, in the process of breaking ground with the ground and waste generated intense friction, wear and tear quickly. Asphalt concrete pavement is a high consistency of asphalt binder, heated at high temperature minerals in materials with a variety of forced mixing, paving, rolling made. Asphalt concrete pavement material is mixed materials, energy spectrum analysis know-main component elements are silicon, calcium, aluminum, carbon, potassium, iron and other elements, in which content is more silicon and calcium. Posed by chemical substances are mainly quartz (silica), calcite (calcium carbonate, dolomite (calcium and magnesium) (carbon dioxide), kaolin (Hello, 2SiO, 2HO) and so on. A variety of materials structure and morphology and hardness shown in Table 1 . (more…)