Hydraulic rock drill

The shank adapter of hydraulic rock drill broke after drilling 4000 m. Failure analysis is conducted using fracture morphology observation, chemical composition, mechanical properties and microstructure analysis. The results show that the material of shank adapter has well wear resistance and

The 4Cr5Mo2V shank adapter for a hydraulic rock drill drill machine cracked after 10 days of use. Through the observation of fracture morphology, chemical composition analysis, mechanical properties and metallographic structure test, the causes of cracking of 4Cr5Mo2V shank bushing were

The 20CrNi3 shank adapter for hydraulic rock drill was fractured after drilling for 300 meters．The fracture causes of 20CrNi3 shank adapter were analyzed through chemical composition analysis，fracture morphology and microstructure observation，mechanical properties testing． The results showed

Hydraulic rock drill is the core component of blast furnace taphole machine, and the installation quality directly affects its working efficiency, application cost and benefit creation. Its matching size and shape and position tolerance requirements are very strict, and the site location space

The COP1838ME rock drill is a rock drilling equipment that has multiple functions such as impact, rotation, propulsion, and flushing. Taking the Atlas COP1838ME rock drill as an example, this article introduces the damage to the main components of the rock drill, analyzes the causes of damage to the

Based on the analysis of the fault forms and causes of the hydraulic rock drill in the practical application,the paper puts forward the corresponding measures to prevent and reduce the faults, which can be used as reference and guidance in the design, manufacture and using of the hydraulic

The COP1838 hydraulic rock drill is a common equipment in modern engineering construction. It introduces its structural composition, working principle, operation precautions, etc., analyzes its maintenance safety rules, and hopes to do a good job in the maintenance of rock drills in a more

Analyze the development history and current situation of surface rock drilling rigs, summarize the current common types of surface rock drilling rigs, and think that the integration of the development of foreign rock drilling rigs and computer control systems has become the development trend of

The paper outlines EPIROC’s COP MD20 hydraulic rock drill and analyzes its advantages in usage. This hydraulic rock drill is compared with COP 1838 in terms of structural features. The paper also assesses the technical road of double- side oil return system and the prospect of COP 1838 product.

There are problems exsiting in a drilling process of hydraulic rock drill，for example，the front end cover becomes loose，rotary pressure can not be tested，impact piston strains and the drill does not impact.In order to improve drilling efficiency of imported drilling jumbo in downhole production

Targeted at the domestic market, YYG18U hydraulic rock drill has seen its main applications in hard rock drilling and construction such as tunnels and mines. Based on more than 2 years of using experience of YYG18U hydraulic rock drill from Epiroc, the paper covers the structure

In this paper, in the light of the principle of impact drilling work of hydraulic rock drill, the main factors of affecting the rock drill pore forming efficiency are analyzed. This provides the reference for hydraulic rock drill design and optimization of hydraulic rock drill performance parameters

The rotation chuck bushing is one of the important parts of the buffer mechanism in hydraulic rock drill ZYYG170A, and also one of the parts that is frequently damaged during operation. Whether in the buffering process or the resetting process,Tish arttcle chuck bushing is always clamped between the

The paper collects a total of 23 models of hydraulic rock drills from Sandvik, 14 models of which fall into H family and 9 models of which belongs to RD family. Main specifications of each models are listed. Models are made up of 3 parts, that is, prefix, number, and suffix.

The abnormality of high-temperature in the gear box was found while the model ZYYG170A hydraulic rock drill was used at a tunnel in Henan province. After analysis, technicians found the reason was the extremely small fit clearance between the bush and rotation chuck bushing. After the regulation

Rock drill is a precise component on the jumbo with complex structure. Its failure is accompanied by various reasons and high cost of parts replacement. Taking COP1238K rock drill as an example, starting from the working principle of rock drill, combined with the improper operation found

The paper briefs the history and foundation course of the Epiroc, as well as the implications of Epiroc's logo. It focus on general information on hydraulic rock drills from Epiroc , their classification and statistics in recent years. The model of a hydraulic rock drills consists of 3 parts

Doorfoc Inc. is a hydraulic rock drills manufacturer based in Finland, and its products are popular in domestic market for theri excellent qualiy. The paper describes the sepcifications of hydraulic rock drillsf from the company, in expection of offering experience for the development of

Since its acquisition of Tamrock based in Finland in the 1990s, Sandvik, a large-scale multinational company, also possessed Tamrock’s hydraulic rock drills business. Hydraulic rock drills from Tamrock had been the largest competitors of those from Atalas. The paper covered relevant

The paper lists some problems existing in the production and application of TAY series hydraulic rock drills as well as their respective solutions. It can be used as a reference for the production of the hydraulic rock drills in the sector.

Eprioc Group Company,an emerging company which is split from Sweden’s Atlas Copco,has independent businesses. The family of hydraulic rock drills features complete types and appropriate classification. In this paper,specifications of non-open-pit hydraulic rock drills such as the anchor drilling rig

Eprioc Group Company，an emerging company which is split from Sweden'S Atlas Copco，has independent businesses．The family of hydraulic rock drills features complete types and appropriate classification．In this paper,specifications of open-pit hydraulic rock drills from the company are introduced

The structure of a stepwise pressurization device for a full-hydraulic rock drill rig is introduced first,and then the pressure setting method of the device is systematically described. The hydraulic rock drilling rig equipped with the step-by-step pressurizing device can quickly and accurately

During the exploitations at metal mines and the open-pit rock-drilling jobs, the drilling and blasting method is the only effective rock-breaking method. Hydraulic rock drills and hydraulic rock drill rigs are cost-effective rock-breaking equipments. The computer-control automatic

The paper outlines the development of furnace-tapping hydaulic rock drills in china , and lists names of 11 companies making furnace-tapping hydraulic rock drills. In addition, it discribes the models,features, specifications and appearances of hydraulic rock drills from respective makers.

The paper looked hark on the historical couise of research and development of hydraulic rock drills in China and pointed that current situation of hydraulic rock drills was less optimal in China. It also listed models of hydraulic rock drills and manufactures producing them in China and collected

The paper analyzes developmental trends of hydraulic surface tophammer drill rigs home and abroad and proposes the classification of this kind of products. Based on the latest data, it compiles makers and models of the hydraulic surface tophammer drill rigs in China, collects specifications of the