Christian heavy metal is a type of heavy metal that describes, not a genre or sub-set of classic heavy metal, but a mix of all types of metal that contain Christian lyrics and themes.  It came into existence in the late 1970’s, gained massive popularity during the 1980’s, went underground in the 1990’s and has finally been revived in the 2000’s. 

 

Christian Heavy Metal, also called “white metal”, is a cross-genre term.  While most people think that Christian metal has a milder or softer style, it actually covers all extremes in the industry, from pop metal to doom/death metal and everything in between.  The one common factor to all styles is the lyrics.

 

Christian metal began in the late 1970’s in the US and Sweden during the “Jesus Movement”.  The instruments used are similar to all metal bands and include electric guitar, bass guitar, drums and occasionally keyboards.  It gained worldwide popularity during high pressure die casting parts the “golden era” in the 1980’s, with popular “glam bands” including Stryper and Leviticus.  Saint, which also gained widespread acceptance during this time was often compared to Judas Priest in style and sound.

 

It took about a year for metal fans to realize that some of the groups were Christian and they were playing Christian lyrics.  Stryper, who had gained commercial success in 1985, received a hostile reception when they went to play at a Dutch music festival.  Despite some opposition, Stryper went on to greater popularity and were the first band to reach platinum status on an album and have three music videos that spent weeks on the top 10 list for MTV.

 

Christian Metal was first criticized by secular music fans and, then, as it gained more popularity, it was also criticized by Christian fundamentalists.  One of the biggest opponents to this genre was the televangelist Jimmy Swaggart.  Unfortunately, his opposition back fired.  He drew the attention of the secular media to his cause, which in turn, gave the genre worldwide recognition.  In the aftermath, many new bands from around the world began to rise up and gained the attention of major record labels.

 

Unfortunately, many churches were still opposed to the Christian heavy metal genre and rejected the groups participation in their church services.  A group, called Sanctuary, was started in 1984 as a “rock and roll refuge” for metal fans and musicians.  It brought people together, nationwide, in the first Christian Metal Festival in 1987.  Sanctuary metal festivals spread to dozens of locations and had a significant impact on new groups to the genre.  For example, P.O.D. performed their first concerts in Sanctuary.  Sanctuary finally closed its doors in the late 1990’s when it believed that the Christian metal genre had finally gained enough widespread acceptance.

 

Christian Metal groups, just like secular metal, went underground during the 1990’s.  The scene was fairly quiet until the 2000’s.  As the heavy metal movement revival began, new Christian groups emerged such as P.O.D. and Underoath.  P.O.D. became the most successful band when their 2001 album went multi-platinum, gaining mainstream secular acceptance.  Christian metal, although no longer called “white metal”, continues to grow in popularity and acceptance, in both the secular and Christian sectors.

 

 

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Detailed information on every aspect from the pre-historic times to the sophisticated metals and machining of modern day are being provided in this website for people to read and thus profit from this information. Light has also been shed on the future of the industry.

Investment Casting
Investment casting also called lost-wax casting is one of the oldest known metal forming process. This industrial process is generally used for small castings but is also used to build aircraft engines, aircraft door frames, steel and aluminum castings. Investment casting process is known to produce complicated shapes that are difficult to make with die casting. Though this process is a little expensive than die casting or sand casting process but is useful when it comes to creating intricate designs and complicated shapes.

This Modern form of lost wax process was developed during wartimes when it was found practical for many wartime needs. Later, with the growth of the civilian aircraft industry in the 1980's investment casting was largely in demand. valve parts die casting Today, powered with modern computer technology, robotics and modern casting techniques, 15% of the world's industrial casting is produced by investment casting method.

About Investment Casting Process
A pattern is made is wax and a wax gating system is separately arranged for investment casting. The pattern and gating system are assembled and dipped in a slurry of refractory coating material like tetra ethyl silicate, ethyl alcohol, hydrochloric acid, silica, magnesia, etc. The pattern is placed upside down and supported by flask. Now the molding mixture is poured around the pattern. The mold mixture is a combination of sand and and materials like alumina cement, ethyl silicate, etc.

The mold is placed in a inverted position and heated, which helps the wax that flow down to be collected for reuse. A specific temperature is maintained in the mold for pouring of the alloy and for helping preserve the intricate casting designs. When the wax completely melts out, the void space is filled with molten metal. Burnout process helps in removing the wax and gas-forming material formed in the mold.

Applications of Investment Casting
Jet propulsion for military and civilian aircrafts gave investment casting the foremost status in the casting industry. From heavy casting of 300Kg to small casting of 30 kg, this casting method is used for as wide for hi-tech industrial applications. This process is more expensive than sand casting in terms of the casting techniques, but the equipment are relatively cheaper. But still, investment casting is largely relied on for complicated designs that cannot be casted using any other method. Investment casting finds widespread application in spacecraft, jet engines, etc. Though this industry is heavily depended on the aircraft industry, it is is find our new field of application to broaden its horizon.

Advantages of Using Investment Casting
Produces impossible and intricate designs
Less surface finishing and machining required for the castings
Produces near net shaped as desired by the customer
Casting have excellent dimensional tolerances
A wide range of metals and high performance alloys can be investment casted.

For more information on metal casting investment castings, sand casting, aluminum casting, die casting process, visit: http://www.industrialmetalcastings.com/

Article Tags: Investment Casting, Metal Forming, Casting Process, Sand Casting

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