摘要:
An air hardening steel which is killed during casting used as material for manufacturing structural tubes for structural elements which are subjected to high mechanical loads, particularly for door reinforcements in the manufacture of automobiles. The steel is composed of in percent by weight:0.15-0.30% C0.50-0.80% Si2.05-3.35% Mnmax. 0.03% Pmax. 0.03% S0.50-1.00% Crmax. 0.60% Momax. 0.05% Al0.01-0.05% Ti0.0015-0.0035% B0.002-0.015% Nremainder iron and impurities,wherein:Ti(%):N(%).gtoreq.3.4%Mn(%)+Cr (%)+Mo(%)+Si(%).gtoreq.3.3%.
摘要:
Molded bodies in the form of packing bodies comprising a macroporous strongly acid or basic ion exchange resin having a voids fraction of 5-95 vol % of the macro shape without pores, a BET surface area of 0.1-1,000 sq m/g, and an ion exchange capacity of 0.05-10 meq/g.
摘要:
A method of, and apparatus for, repairing mechanical and/or chemical damage to the surface of glass bottles destined for re-use. A bottle to be repaired is brought to a temperature in the region of the transformation point of the glass of the bottle, its surface is thermally treated with laser beams, and during the treatment the bottle surface is linearly scanned with the laser beams while rotating the bottle about its longitudinal axis to repair the surface. The apparatus comprises a laser source and optical means for directing the laser beam generated by the laser source onto the surface of a bottle being treated.