New equipment becomes a "sharp weapon" for tunneling"
2020-09-06
On August 28, the first medium-thick coal seam digging and anchoring integrated machine of Zi Mining Group was assembled in the ground machine repair plant of Shuangxin Mining Company and entered the joint commissioning stage. It is understood that the cutting height of the digging and anchoring integrated machine is 3.7 meters. Once it is put into use, the tunneling efficiency of medium and thick coal seams will be more than doubled. The picture shows the assembly and debugging site of the digging and anchoring integrated machine.
What elements are included in the steel of the drill head pants? What role do they play?
2020-09-06
Carbon C: Mainly affects the strength and hardness of steel. Excessive carbon content will reduce the toughness and weldability of the steel. Although the increase of carbon content in steel can improve the strength and wear resistance of parts, it damages the toughness and manufacturability of steel. Therefore, when designing the carbon content of steel, the carbon content should be determined according to different conditions. The steel used for drill head body needs high strength, wear resistance and certain toughness. It is more appropriate to choose carbon content between 0.42 and 0.48.
The technician is visiting the site.
2020-09-03
On August 27, the technical personnel of the 418 team of Hunan Provincial Geological Institute rushed to Yunwushan Village, Jinshiqiao Town, Longhui County, to survey the geological disaster point of a highway landslide, and initially found out the scale and harm of the disaster point, so as to provide the basis for the design of the follow-up emergency treatment project.
Commemorating the 75th anniversary of the victory of the Anti-Japanese War
2020-09-03
Through the history of time and space, Some marks are eroded by wind and rain, Some memories are destined to be remembered for a lifetime. Today, On September 3, 2020, The Chinese People's War of Resistance Against Japanese Aggression and the World Anti-Fascist War On the 75th anniversary of the victory, It is also worth every Chinese to remember the day!
Requirements for the material of the pants body of the drill head
2020-08-29
The drill bit contacts and breaks the rock mass during the drilling process, and is subjected to huge impact load and abrasive wear. The use conditions are extremely harsh, so the requirements for the steel used for the drill bit body are also special.
China Jindu Shandong Zhaoyuan 14th Gold Festival and 4th Internet Gold Festival Opens
2020-08-28
In the golden autumn of August, we welcome the grand gathering. On August 28, the 14th China Gold Capital · Shandong Zhaoyuan Gold Festival, sponsored by China Gold Association and Zhaoyuan Gold Association, and undertaken by Shandong Zhaojin Group and Shandong China Mining Group, was grandly opened in Zhaoyuan, Shandong.
Pay attention to lotus mountain drilling tools:
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