摘要:
A process for producing a semi-solidified slurry of an iron alloy including the steps of pouring a melt of an iron alloy into a semi-solidified slurry producing vessel 30 and cooling the melt therein to obtain a semi-solidified slurry having a crystallized solid phase and a residual liquid phase, wherein a hypoeutectic cast iron composition is used as a material, a melt of the composition is poured into the semi-solidified slurry producing vessel 30 in a predetermined amount at a time, a temperature of the melt when poured into the semi-solidified slurry producing vessel 30 is controlled to be not lower than a crystallization initiation temperature of the composition and not greater than a temperature that is 50° C. higher than the crystallization initiation temperature, and a cooling rate of the melt poured into the semi-solidified slurry producing vessel 30 is controlled not to exceed 20° C. per minute.
摘要:
A billet for a thixocasting process and a thixocasting process using the billet allows casting using a thixocasting process to be realized at low production cost without permeation of an oxide film to the inside of the billet in injection molding. In a billet used for a thixocasting process continuously cast by intermittently drawing out, the interval of the oscillation marks is 10 mm or less and the maximum tilt angle of the oscillation marks relative to a cross section which is at a right angle to the drawing out direction is 45° or less.
摘要:
When a brake pedal is operated by the vehicle driver, and detection signals from hydraulic pressure sensors and a brake switch, for detecting pressure of the brake pedal, are supplied to an ECU, the ECU performs a determination according to the detection signals as to whether or not the hydraulic pressure PM is a maximum pressure gradient d(PM)/dtmax. When the determination result of the braking condition is an emergency braking condition, an intake valve is opened. Thereafter, atmosphere is forcibly supplied to atmospheric chambers of a booster, to assist the braking force.
摘要:
A plug-opening device which includes a rod capable of moving forwards or backwards, and a plug-opening member having elastic leaf springs, for urging against a circumferential side of a plug of a specimen container, attached to the rod in the longitudinal direction. The plug-opening member preferably includes a plurality of leaf springs in a stack formation, wherein an end portion of a higher leaf spring relative to another end portion of a lower leaf spring, adjacent to the higher leaf spring, extends further away from the end portion of the rod. More preferably, the plurality of leaf springs are attached with a gap being formed between upper and lower leaf springs. The plug-opening device can reliably, effectively, and smoothly open a plug of a specimen container with one stroke of the cylinder rod.
摘要:
A brake system for a vehicle comprises a booster unit including a power piston disposed slidably in a housing for defining a first chamber and a second chamber in the housing, a regulator disposed slidably in the power piston, a flow restrictor formed between the first chamber and a fluid pressure source for restricting flow of fluid in response to movement of the regulator, a pilot pressure chamber disposed upstream of the flow restrictor, a movable member moved by the internal pressure of the pilot pressure chamber thereby permitting communication between the second chamber and the fluid pressure source, and a reaction spring disposed between the power piston and the regulator. A master cylinder is connected to the power piston of the booster unit to supply braking hydraulic fluid at controlled pressure to front and rear brakes, and a brake pedal actuates the regulator of the booster unit to cause movement of the regulator relative to the power piston.