Demand
Patterns continue to be needed for sand casting of metals. For the production of gray iron, ductile iron and steel castings, sand casting remains the most widely used process. For aluminum castings, sand casting represents about 12% of the total tonnage by weight (surpassed only by die casting at 57%, and semi-permanent and permanent mold at 19%; based on 2006 shipments). The exact process and pattern equipment is always determined by the order quantities and the casting design. Sand casting can produce as little as one part, or as many as a million copies.
Read more about this topic: Pattern Maker
Famous quotes containing the word demand:
“The demand for equal rights in every vocation of life is just and fair; but, after all, the most vital right is the right to love and be loved.”
—Emma Goldman (1869–1940)
“One cannot demand of a scholar that he show himself a scholar everywhere in society, but the whole tenor of his behavior must none the less betray the thinker, he must always be instructive, his way of judging a thing must even in the smallest matters be such that people can see what it will amount to when, quietly and self-collected, he puts this power to scholarly use.”
—G.C. (Georg Christoph)
“The demand to be loved is the greatest of all arrogant presumptions.”
—Friedrich Nietzsche (1844–1900)