Knife Steel - Hold an Edge Verses No Rust
Knife steel is a critical component of the custom knife. Making a fine homemade knife is a work of patience, and a dedication to precision craftsmanship. A custom knife maker must understand the science of metallurgy when choosing an appropriate knife steel. To rust or not to rust, that is the question. Actually, that is only one of the questions. To maintain a great edge, or not to maintain a great edge is another important question! Many custom knife makers are finding middle ground for those two questions. High carbon and stainless steels are both acceptable if properly alloyed. The high carbon steels are typically the steels that are forged. They can be differentially tempered. This property gives the knife maker more options. He can better control the hardness of the cutting edge, and still have a tough knife with a springy back.
Категория поста: English
Silver Jewelry History
Asia Minor And Its History And Legends Legends are usually just that, legends. However, some legends have more truth than you might know. For the ancient Greeks, the legendary Caucasus Mountains marked the beginning of the ends of the Earth, and a fitting prison for the enemies of Greece. This is told in the tale of the Greek god Prometheus, who spent eternity chained to Mount Caucasus after stealing fire from Mount Olympus and giving it to mankind. But unlike the symbolism of Prometheus tale, the Caucasus Mountains were, and still are very real. Rich in Silver, the vast Caucasus mountain range stretches across present ndash day Armenia, Azerbaijan, Georgia and Turkey. In time, the Caucasus silver, electrum, gold and gemstone laden rivers gave birth to legends of monsters and heroes.
Категория поста: English
Beryllium
The Department of Health and Human Services (DHHS) and the International Agency for Research on Cancer (IARC) have determined that beryllium is a human carcinogen. The EPA has determined that beryllium is a probable human carcinogen. EPA has estimated that lifetime exposure to 0.04 g m 179 beryllium can result in a one in a thousand chance of developing cancer. While solid beryllium is not harmful, the dust created as result of working with beryllium metal, metal oxides, alloys, ceramics, or salts can be deadly. If ingested into the lungs the dust can cause scarring leading to beryllium disease and lung cancer. Beryllium disease is. An estimated 2 ndash 6 of workers exposed to beryllium eventually develop beryllium disease and up to one third will die as a result. Once exposed to beryllium there is a lifelong risk of developing Acute Beryllium Disease (ABD).
Категория поста: English
Kawasaki Motorcycles - Independent in Thoughts and Actions
The story of Kawasaki Company goes back to 1924, at that time involved into metallurgy and the aircraft industry. In 1949, they decided to enter the motorcycle industry producing engines that could be adapted to motorcycles. FIRST KAWASAKI MOTORCYCLES PRODUCTS a Motorcycle Engines In their line you could find a 60 cc two ndash stroke, as well as a 150cc and a 250cc four ndash stroke engines developed with technology from BMW company whom with they had had relationships since their beginnings in the aeronautical industry. It wasn t until 1954 that Kawasaki Motorcycles produced their first complete motorcycle under the name of Meihatsu (a subsidiary of Kawasaki Aircraft Co.). Almost at the same time, they also tried to introduce their own line of scooters to the market, but they soon realized they couldn t compete against the two giants of the scooters industry for those days: the Fuji Rabbit and the Mitsubishi Silver Pigeon.
Категория поста: English
Days Out for Everyone in Sheffield
Sheffield is fast becoming a tourist destination, and not only for people within the U.K. A wide array of attractions, events, and sites to see await Sheffield s guests. Not so long ago Sheffield was an industrial giant. Not because of it s size, but because of the amount and quality of the steel and other metallurgy products produced and sold there. In just a few decades, Sheffield has been transformed into an entertainment and cultural center, as well as a great tourist destination. Sheffield became famous the world over by leading the way in metallurgy advances, and now recognizing changing times, Sheffield is leading the way in a transition to culture, science, and entertainment. The Magna Center was the first Science Adventure Center opened in the U.K., and offers state of the art interactive displays featuring the elements earth, fire, and water.
Категория поста: English
The Beginnings Of Jewelry
Jewelry is as old as the history of man, dating back from cave ndash dwelling times in South Africa some 100,000 years ago in the form of seashells being tied about the neck. Man s original jewelry was also composed of teeth, carved stone, wood and bone. Function follows form as this type of jewelry was most likely used to tie loose clothing to the body and progressed to an aesthetic type of adornment. In much of the history of jewelry, the wearer displayed status and wealth by ornamenting the body with jewelry. Cro ndash Magnon man began making jewelry when migration to Europe from the Middle East transpired, 40,000 years ago. Metallurgy, the use of metals for jewelry making, appeared 7,000 years ago in the form of copper adornments. The Ancient Egyptians along the Nile Delta began using gold for thousands of years, dating to 5,000 years ago.
Категория поста: English
History of Welding and Metallurgy - Part 1
For you students out there doing a report on the history of welding, let me first say this...I have always found the earliest history of welding to be kind of boring. But I remember back to high school when my ears perked up in history class at the first mention of longbows. So I will try to make this interesting by talking about swords and airplanes. This is actually more like the history of metallurgy. I will save the history of welding for Part 2 Let s get the boring stuff out of the way first. None of these dates are hard facts and I am probably going to omit some important terms like «Paleolithic» but that s how we roll up in here. So Here goes. From the very beginning of mankind, up until about 8000 BC, was known as the Stone age.
Категория поста: English
Expectations of an Ordinary Person
The way one lyrist has written, «Hum logo ko samajh sako to samjho dilbar jaani jitna bhi tum samjhoge utni hogi hayerani»...in a nut ndash shell we Indian s are most «unpredictable». When the expectations are low...we have performed really well and contrary to that when expectations were very high...most of the time we have failed to live up to those expectations. As we are going to complete 58 yrs of independence on 15th August 2005, it is a pleasure to share with you the facts about India, Vision India 2025 (From Ordinary person s point of View), and India in 21st Century. From Independence...till now India was a British colony. It earned its independence from the British on 15th August 1947. Day before that Pakistan which was created as a result of partition of British India was established and flanked on two sides of India: West Pakistan which is called today Pakistan, and east Pakistan, now an independent state called Bangladesh.
Категория поста: English
A Solution to the High Cost of College
This article is in a 1950 s time capsule. I never planned on going to college simply because I was not good at school things and I knew it. However I did go to college and how I got there is interesting. The summer after my forth year of high school, my uncle had a management job in a local brewery. I went to work there. There was a strike at a brewery in a nearby city. Our brewery needed men because we were filling the gap so to speak. A school friend got a job too. In the fall close to the time people headed back to school, my friend looked at me and said: «no school to go back to this summer lets see if there is a college we can go to.»
Категория поста: English
Water Management 2008 Exhibition and Conference
In the current scenario, the coordination of water resources, upgrade of utility networks, water management reform and conservation have become important goals for the economic well ndash being and growth in developing and developed economies. India at present is the best exploitable market in the global scenario because of the economic reforms, relaxation of Government policies and the growing interest of the International key players of the Industry. Rapid industrial growth and technological developments has been a constant boost to the industry but the rise in interest and use of environment friendly technologies has given rise to newer and advanced dimensions to the industry. Industries worldwide are looking for healthy and environment friendly solutions to water and wastewater problems. The domestic big players and the multi ndash national companies are carrying on smooth business in India providing solutions to the most complex water crisis and problems and with the rapid rise in International interest, the future looks good.
Категория поста: English
