Abstract: An aluminum alloy for high pressure die-casting capable of providing a sufficient castability and a tensile strength of not less than 320 MPa and elongation of not less than 20%, The aluminum alloy contains from 3.6 to 5.5 mass % of Mg, from 0.6 to 1.2 mass % of Mn, from 0.2 to less than 0.5 mass % of Ni, from 0.001 to 0.010 mass % of Be, from 0.01 to 0.3 mass % of Ti, from 0.001 to 0.05 mass % of B, and the balance aluminum and inevitable impurities. The aluminum alloy is particularly available as a material of a vehicle frame and a vehicle body.

Abstract: A method for producing a cylinder block capable of providing sufficient bonding between the cylinder liner and a block body. The cylinder block producing method includes an inner peripheral surface roughening process, outer peripheral surface roughening process, adiabatic particle adhesion process, and melt bonding process. In the inner peripheral surface roughening process, shot blasting is performed to the inner surface of the cylinder liner. In the outer peripheral surface roughening process, semi-spherical dimples are formed on the outer surface of the cylinder liner by sinking the shot balls by their semi-spherical amount into the liner by means of shot blasting. Zn balls and stainless beads each having diameter of 0.4 mm, or Zn balls having diameter of 0.8 mm are used as the shot balls. In the adiabatic particle adhesion process, BN particles are adhered to the inner surface of the cylinder liner.

Abstract: An aluminum alloy for high pressure die-casting capable of providing a sufficient castability and a tensile strength of not less than 320 MPa and elongation of not less than 20%, The aluminum alloy contains from 3.6 to 5.5 mass % of Mg, from 0.6 to 1.2 mass % of Mn, from 0.2 to less than 0.5 mass % of Ni, from 0.001 to 0.010 mass % of Be, from 0.01 to 0.3 mass % of Ti, from 0.001 to 0.05 mass % of B, and the balance aluminum and inevitable impurities. The aluminum alloy is particularly available as a material of a vehicle frame and a vehicle body.

Abstract: A method for producing a cylinder block capable of providing sufficient bonding between the cylinder liner and a block body. The cylinder block producing method includes an inner peripheral surface roughening process, outer peripheral surface roughening process, adiabatic particle adhesion process, and melt bonding process. In the inner peripheral surface roughening process, shot blasting is performed to the inner surface of the cylinder liner. In the outer peripheral surface roughening process, semi-spherical dimples are formed on the outer surface of the cylinder liner by sinking the shot balls by their semi-spherical amount into the liner by means of shot blasting. Zn balls and stainless beads each having diameter of 0.4 mm, or Zn balls having diameter of 0.8 mm are used as the shot balls. In the adiabatic particle adhesion process, BN particles are adhered to the inner surface of the cylinder liner.

Abstract: An aluminum alloy for die-casting capable of being used in high pressure die-casting method, and capable of providing a product having a sufficiently high strength and elongation without T6 treatment after casting and endurable under a corrosive atmosphere. Such aluminum alloy is used as a material of a subordinate frame for an automobile. The aluminum alloy contains from 8.0 to 9.0 mass % of Si, from 0.35 to 0.45 mass % of Mg, from 0.3 to 0.4 mass % of Mn, from 0.002 to 0.008 mass % of Be, less than 0.20 mass % of Fe, not more than 0.2 mass % of Cu, not more than 0.1 mass % of Zn, not more than 0.1 mass % of Ni, not more than 0.1 mass % of Sn, and remainders of Al and inevitable impurities. High pressure die casting is performed with this alloy by a die-casting machine provided with a seal ring disposed over a plunger tip, liquidized gaskets, a sealing rubber and a pin seal plate those being capable of providing high seal-ability and high vacuum in a mold cavity.

Abstract: The present invention concerns a method and apparatus of automatically mounting electronic components at predetermined positions of an electronic circuit board, which comprise a mounting process of taking out an electronic component 10 from an electronic components holding unit 6 and mounting onto an electronic circuit board 5 and a processing process to trim the electronic component 10 during the mounting process to a preferable characteristic value thereby allowing to reduce the number of types of electronic components 10 to be stored in the electronic components holding unit 6 and reduce the equipment cost and the management cost of the electronic components 10.

Abstract: A component mounting apparatus includes a holding section for holding a plurality of component mounting heads, each head having a component sucking nozzle. One of the component mounting heads selectively held by the holding section can be mounted on a component mounting section. A storage section, provided on each component mounting head, stores information of each component mounting head, and a reading section, provided on the component mounting section, reads the information of the storage section.

Abstract: An aluminum alloy composition represented by the following general formula (I):Al.sub.a Mg.sub.b Ni.sub.c Mn.sub.d Si.sub.e Cu.sub.f Fe.sub.g Ti.sub.h Zn.sub.i B.sub.k Zr.sub.l (I)whereinb=about 2-8 wt %c=0-about 7 wt %d=0-about 3.0 wt %e=0-about 1.0 wt %f=0-about 1.0 wt %g=0-about 0.5 wt %h=0-about 0.3 wt %i=0-about 0.3 wt %j=0-about 0.1 wt %k=0-about 0.1 wt % andl=0-about 0.3 wt %; provided thatc+d.gtoreq.about 0.5 wt %, anda is balance.

Abstract: An aluminum alloy for abrasion resistant die castings comprising by weight, 6.0 to 9.0% Cu, 0.5 to 2.0% Mn, 1.6 to 3.0% Fe, 3% or less Mg, together with 13.5 to 20.0% Si, 0.5% or less Ni, an inevitable impurity of 0.3% or less Sn, and the remainder being Al, prepared by crystallizing out primary Si crystals of Si and Al-Fe-Mn-Si compounds and by forming a solid solution with Cu and Mg in the alloy's matrix.

Abstract: An alluminum alloy composition represented by the following general formula (I):Al.sub.a Mg.sub.b Ni.sub.c Mn.sub.d Si.sub.e Cu.sub.f Fe.sub.g Ti.sub.h Zn.sub.i B.sub.k Zr.sub.l (I)whereinb=about 2-8 wt %c=0--about 7 wt %d=0--about 3.0 wt %e=0--about 1.0 wt %f=0--about 1.0 wt %g=0--about 0.5 wt %h=0--about 0.3 wt %i=0--about 0.3 wt %j=0--about 0.1 wt %k=0--about 0.1 wt % andl=0--about 0.3 wt %; provided thatc+d.gtoreq.about 0.5 wt %, anda is balance.