test rock cutter technology

A set of indices based on indentation tests for assessment ...

A full-scale rock cutting test is one of the best tools for defining cuttability of rocks, since an actual rock sample is cut by a real-life cutter, which reduces the scaling effect. Its disadvantage is that it requires large blocks of rock samples (around 1x1x0.6 m), which are usually difficult, too expensive or …

Correlation of rock cutting tests with field performance ...

The optimum cutter spacing and depth of cut for Kozyatagi-Kadikoy metro tunnels in the main rock formation (limestone and shale) using full-scale rock cutting test are encountered 8 cm and 0.8 cm, respectively. The optimum s/d ratio for (limestone and shale) using full-scale rock cutting test …

HARD ROCK CUTTING WITH SMARTCUT TECHNOLOGY

The actual test program included cutting three rock types, Indiana Limestone, Colorado Red Granite, and Umettela basalt, to develop cutting force and strain measurement data under conditions of ...

Experimental investigation on the breakage of hard rock by ...

linear multi-function test table as shown in Fig. 2. The multi-function test table is composed of a moving plat-form driven by an underlying hydraulic cylinder, which provides the rock with a cutting force, F c. The rock samples are set and fixed on this platform. One thrust cylinder is …

New hard rock cutting technology from - International ...

engineers envision the new cutting technology will be used in a number of different types of hard rock mining systems: "For example, a compact and versatile unit could cut and load hard rock in a continuous, automated process. Such a system would enable high-speed mine development and faster access to ore deposits.

Drillability Test Suite - Geocomp

The test method determines Drilling Rate Index, Bit Wear Index, Cutter Life Index. The indices are indirect measures for the drillability of rock in tunneling and rock excavations. Preferred Test Sample Size. Rock core specimens. Number of Test Specimens. 1. Test Specimen Size. 15 - 20 kg preferred; minimum smple size 10kg of rock core . Keywords

CUTTING OF ROCK (January 2007) - Central Dredging …

not mean that cutting forces in saturated rock are always lower than in dry rock. The petrography is important for the weir of rock cutting tools Unconfined compressive strength The most important test for rock in the field of dredging is the unaxial unconfined compressive strength (UCS).

Home - Hard rock cutting technologies for mining

Establishing the fundamentals of cutter/rock interaction and rock failure mechanism Undercutting disc technology combines the robustness and wear resistance of roller discs (mainly used on TBMs) with the efficacy of drag cutters (used on road-headers) in one single technology to cut very hard rocks.

Rock Cutting Technology Course – BCM, Botswana Chamber of ...

Rock Cutting: The benefits of rock cutting include continuous operation and improved quality of mining. Rock cutting itself uses tools in various modes, within various types of rock cutting machine, depending on the specifics of the application. Performance depends on rock mass classification and can be estimated using models.

Ancient Indian Rock Cutting Technology - YouTube

Jun 04, 2014· Even though rock cutting started as early as 200 B.C, the height of rock cutting technology was reached around 600 A.D by Pallavas in South India. Even though there is a lot of evidence of ancient ...

Diamond-Cutter Drill Bits - NREL

Title: Diamond-Cutter Drill Bits: Office of Power Technologies (OPT) Success Stories Series Fact Sheet Subject: Diamond drill bits, which penetrate hard rock, cut faster, and last longer than conventional drill bits, are helping the geothermal industry reduce the cost of drilling for energy resources.

Hard rock revolution on the horizon

From validating the cutting technology in a full-scale test rig in South Africa to almost five years of underground testing of its hard rock continuous mining system, the company has verified, studied and improved on everything from the life of the components to material handling, control and automation.

The History and Impact of Synthetic Diamond Cutters and ...

The History and Impact of Synthetic Diamond Cutters and Diamond Enhanced Inserts on the Oil and Gas Industry D.E. Scott Hughes Christensen, 9110 Grogan's Mill Road, The Woodlands, Texas 77380 USA The PDC cutter for oil and gas drill bits was introduced commercially in 1976, after three years of development work and market testing.

Rock cutting performance assessment using strain energy ...

Abstract. The intrinsic specific energy, that is the minimum energy consumed by pure cutting action to cut unit volume of rock, along with the rock strain energy, that is the absorbed energy by unit volume of rock in uniaxial compression, were used together to assess rock cutting performance.

Hard rock cutting and the development of a continuous ...

cutting was considered to be questionable and the techno-logical hurdles to develop effective bearings and seals substantial. It was decided that the most cost-effective option for reef cutting would be conventional disc cutting technology. A second rock sample was sent to Austria. This was a pyroxenite/norite rock with an UCS of up to 140 MPa ...

Water Jet Cutting

Water Jet Cutting- A Technology on the Rise October 2010 Page 1 Foreword: The purpose of this brochure is to give the reader a rough overview of Waterjet Cutting. In addition to precise cutting of various materials as presented, many special applications i.e. medical and in …

Petrogen - Technology of liquid fuel cutting torch systems

One of the selected technologies was the oxy-gasoline cutting torch, which was demonstrated at Fernald in October 1996." - Federal Energy Technology Center Success Story "Petrogen International has developed the oxy-gasoline cutting torch under the Federal Energy Technology Center's (FETC's) Deactivation and Decommissioning Focus Area.

DynaCut technology achieving breakthroughs - International ...

When the test machine Surface Rig 1 (SR1) was conceived in 2011, the performance of a single DynaCut cartridge in hard rock was in the order of 2 m 3 per cutting hour with an average of 10 hours between breakdowns for the cutting device (cartridge).

Benefits of Waterjet Technology for Precision Cutting ...

Benefits of Waterjet. Waterjet cutting technology is one of the fastest growing major machine tool processes in the world due to its versatility and ease of operation. There are multiple advantages to adding waterjet cutting capabilities to your shop.

Rock tools - Mining & Rock Technology

offers a complete range of rock tools for bench drilling, raise boring, coal and mineral cutting, tunneling, trenching, road grading and cold planing. All equipment is designed based on years of research, experience and customer feedback, ensuring that you get the best tool for the job.

New Rock Abrasivity Test Method for Tool Life Assessments ...

Since abrasive wear is the most common process affecting cutter consumption, good laboratory tests for rock abrasivity assessments are needed. A new abrasivity test method by rolling disc named Rolling Indentation Abrasion Test (RIAT) has been developed.

New PDC Cutter Technology launched for Hard, Abrasives ...

Its high unconfined compressive strength, ranging between 9,000 psi and 32,000 psi, make it ideal for field testing new PDC cutter technology. In the first field test, a six-bladed, 97/8-in. PDC bit equipped with 16-mm new generation cutters was used.

Effects of Design and Processing Parameters on Performance ...

advancing a distance of 0.014 inch into the rock. Similarly, the test cutter moved through an arc of 246o to reach the same angular location, advancing 0.041 inch into the rock. The shaded portion of the test cutter shown in Figure 2 corresponds to the area that encountered rock that was not removed by the gage cutters.

Diamond-Cutter Drill Bits - NREL

Diamond-Cutter Drill Bits: Office of Power Technologies (OPT) Success Stories Series Fact Sheet Subject Diamond drill bits, which penetrate hard rock, cut faster, and last longer than conventional drill bits, are helping the geothermal industry reduce the cost of drilling for energy resources.

Rock Cutting Technology - Wits Enterprise

Rock and site properties are combined into rock mass classification systems. Rock cutting: The benefits of rock cutting include continuous operation and improved quality of mining. Rock cutting itself uses tools in various modes, within various types of rock cutting machine, depending on the specifics of …

The Current State of Disc Cutter Design and Development ...

The Current State of Disc Cutter Design and Development Directions Joe Roby The Robbins Company, Kent, Washington Tyler Sandell The Robbins Company, Kent, Washington John Kocab The Robbins Company, Solon, Ohio Leif Lindbergh The Robbins Company, Kent, Washington ABSTRACT: Rolling disc cutters are the business end of hard rock and mixed face ...