3D Printing Technology and Its Application Status and Development Prospect in Foundry

The traditional casting production is design - mold - modeling - pouring - cleaning - post-processing - machine. The 3D printing technology is called additive manufacturing technology. Its working principle is to decompose the three-dimensional model designed by the computer into several

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Use of full negative pressure to guide airflow ventilation and the use of gas

The full negative pressure zone of the mine is the area where the air pressure of the main fan is lower than the ground pressure caused by the underground, and the negative pressure area does not cover the blind alley and the local fan ventilation area. The pressure difference along the roadway in t

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Impact pressure control

Almost all countries in the world are threatened by varying pressures to varying degrees. 1783 United Kingdom first in the world to report the impact of coal mining in what happened pressure phenomenon. Later, in dozens of countries and regions such as the former Soviet Union, South Africa, Germany,

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What if the wireless bridge signal in the monitoring installation is relatively low?

The wireless bridge will know that the wireless bridge has a certain signal strength, too strong is not good, too weak is not good. What should be done if the wireless bridge detects that the signal is incorrect after installation? 1, check whether the wireless bridge is applicable For example,

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Cummins Heavy-duty Power Boosts Foton Daimler's Acquisition of Thousand Tailors

For logistics people, smart logistics has become a popular keyword. However, regardless of how the industry develops, digitalization, big data, Internet and warehousing, and other "black technology" how cool, the car will always be the first. Having a high-efficiency, high-intellige

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WSS-401 Bimetal Thermometer Structural Features and Working Principle

WSS-401 bimetal thermometer is an on-site measuring instrument suitable for measuring medium and low temperature, which can be used to directly measure the temperature of gas, liquid and steam. The thermometer has the characteristics of waterproof, anti-corrosion, shock-resistant, intuitive, easy

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Brief introduction of coalbed methane utilization technology

About CBM Coalbed methane, commonly known as coal mine gas, is an unconventional natural gas that is mainly in the state of adsorption and is produced and stored in coal-bearing strata. Its composition is basically the same as that of conventional natural gas (methane content is more than 95%, calo

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Underground mining safety technology method

The mining method refers to how to safely and economically produce ore in the ore block, mine or pillar, including mining and cutting, mining, and goaf processing. Reasonable choice of mining method means that it can strengthen the safety management of mining work and reduce personal injury and deat

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Safety technical measures for replacing the tail rope of main shaft hoist

I. Construction project: Replace the tail rope of the north side of the main shaft hoist Second, the construction site: the main well bottom cleaning oblique, the main well -685 level, -650 horse head door and -650 alley Third, construction time: July 31, 2017 4. Construction organization: Constr

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Application and Research of Design Decision System for Anchorage Cable Support in Mining Roadway

1. Introduction Bolt support is a new form of roadway support. Compared with traditional support methods, it improves the support effect, reduces the support cost, accelerates the lane speed, reduces the labor intensity, and improves the utilization of the roadway section. The superiority of simplif

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Cable safety measures for laying down inclined shafts in underground air intake

I. Name of the measure: Safety measures for laying power cables in underground inclined shafts Second, the measures Note: In accordance with Article 462 edition 2016 "coal mine safety regulations": "do need to tilt the roadway in the mechanical lift of the air intake (not including t

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The difference between foreign mechanical drawings and domestic mechanical drawings

Since the reform and opening up, China has imported a lot of foreign equipment, drawings and other technical materials, and many of the developed countries have different methods of mechanical pattern projection than those used in China. In order to better learn the advanced technologies

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