Suitable Processing Technique: Cutting edge and beading hardware products.Used to produce pan, bowl, dish, cover, basin, cup and
Main functions:
1. Cutting functions:automatic cutting workpieces to avoid occupational injuries and improve production efficiency.
2. Beading functions:automatic beading workpieces to avoid occupational injuries and improve production efficiency.
3. Descending and fixing functions: press cylinder descend and fix workpiece on the processing position, prevent materials drop and provide condition of stable production processing.
4. Automatic speed regulating functions: the spindle motor automatically adjust rotating speed according to the processing size, matching the cutter to cut and improve the quality of workpiece.
Main features:
1.Safe system: includes light curtain protector and overload alarm and so on, avoid injury accident
2. High automatic degree: cutting and beading in fully automatic mode.
3. Cost effective: cover equipment cost within one year.
Cutter and Beader Combined Machine Shantou Sunshine Automation Equipment Co.,Ltd. , http://www.stjsrobot.com
other products from stainless steel sheet, with shape of product: round. with safe, stable and efficient operation, this equipment is used to beading on the edges of hardware, reducing the sharpness and preventing it from getting bent or shapeless, then improve the quality of products, and create best profit and value for stainless steel products.
Application effect of block stone cementing process in a mine in the USSR and Australia
Since the 1970s, countries such as the Soviet Union and Australia have used the empty field method to return to the mining house, filling with stone, and then injecting cement mortar into the stone to form a block of concrete; or pouring the gravel into the goaf. At the same time, the cement mortar is transported by pipeline to form a block stone concrete. Then carry out the mining of the pillars.
Soviet Czech Magnitogorsk copper ore open cells with good Sublevel Room case, stope width of 10 ~ 20m, a width of pillar 20 ~ 22m. After the mining house is finished, the gravel is filled with gravel, and the gravel filling material accounts for 45-55% of the space. Then, the gob is sealed and pressed into the cement slurry at a pressure of 0.5 to 0.6 MPa (cement: slag: water = 1:1.6: 2.6 to 1:3:3.5). Depending on the structure of the mining method, two or six closed points of cement slurry are placed at the height of the mine (see Figure 1). The filling body strength can reach 2.4 to 2.6 MPa, and the filling cost is only about 50% of the same strength concrete.
Figure 1 Schematic diagram of the block cement filling
A-6 point grouting; b-2 point grouting
The Monte-Essa mine in Australia uses the method of filling the stope with gravel and cement mortar. The mechanical indexes of the obtained filler and ordinary cement are shown in Table 1.
Table 1 Comparison of mechanical properties of cement paste filling and cementation filling
index
Cemented backfill
Block stone cementing body
Density (kg/m 3 )
1800
2500
Cohesion (MPa)
0.21
0.50
Compressive strength (MPa)
0.81
2.0
Internal friction angle (°)
35
35~40
Secant modulus at the peak (MPa)
150
280