HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Feature
Automation & Motion Control

Hydraulic-Powered Blast Furnaces

NO RATINGS
< Previous Page 2 / 3 Next >
View Comments: Newest First|Oldest First|Threaded View
AnandY
User Rank
Gold
Re: Flow control
AnandY   1/23/2014 10:58:22 PM
NO RATINGS
The hydraulic blast furnaces may have provided a new and efficient solution but many problems are bound to turn up if the problem of flow control is not properly addresses. The stretching of the fluid, especially over long hydraulic lines, must be tested and calculated under stimulated conditions similar to those in the actual furnace. After this, corresponding adjustments can be made in the calibration of whichever flow control systems that you are already using thereby cutting down costs that would have been invested on new systems.

AnandY
User Rank
Gold
Re: Reducing hydraulic spring
AnandY   1/23/2014 10:54:12 PM
NO RATINGS
In order to reduce the hydraulic spring (and as you have clearly pointed this out as one of the main problems that comes with long hydraulic lines) we should focus on the factors that contribute to this. For instance, there is the hose contribution which, though normally insignificant, forms an important consideration when it comes to long hydraulic lines.

William K.
User Rank
Platinum
Reducing hydraulic spring: Done it.
William K.   1/8/2014 5:05:41 PM
NO RATINGS
This is an interesting posting, and quite educational in that I had not been aware of any precision being needed in the loading of blast furnaces. That area is quite far away from the systems that I have designed. So the posting is educational indeed.

But one point, lamenting the springyness of hydraulic systems, I can challenge, since I got much of the spring out of a system in order to make it meet the accuracy requirements. The fact is that hydraulic fluid does not actually compress enough to cause problems. Very small air and gas bubbles do compress, and so it is important to prevent them from being circulated in the system. That is one thing that reduces the system spring. Also, hydraulic lines do stretch, some of them a lot more than others. All hoses are major stretch sources, but using a hose rated for a higher, or even MUCH higher, pressure range reduces the hose contribution to stretch. Likewise, the steel tubing aslo stretches, not very much, but it does stretch a bit. Using tubing with a higher pressure rating and thicker walls will reduce that stretch as well. The result of including all of these choices and selections in a system assembly will often be that the resonant frequency is raised beyond the response ability, resulting in a much more stable system that does not look any different from the outside. That offered us a real competitive advantage for quite a while.

Partner Zone
Latest Analysis
With erupting concern over police brutality, law enforcement agencies are turning to body-worn cameras to collect evidence and protect police and suspects. But how do they work? And are they even really effective?
A half century ago, cars were still built by people, not robots. Even on some of the country’s longest assembly lines, human workers installed windows, doors, hoods, engines, windshields, and batteries, with no robotic aid.
DuPont's Hytrel elastomer long used in automotive applications has been used to improve the way marine mooring lines are connected to things like fish farms, oil & gas installations, buoys, and wave energy devices. The new bellow design of the Dynamic Tethers wave protection system acts like a shock absorber, reducing peak loads as much as 70%.
As U.S. manufacturing booms, companies are beginning to invest in new equipment.
Automobili Lamborghini is joining the ranks of supercar makers who are moving to greener powertrains.
More:Blogs|News
Design News Webinar Series
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
11/6/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Dec 15 - 19, An Introduction to Web Application Security
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service