摘要:
Disclosed is a method for producing a glass substrate, which involves a first polishing step and a second polishing step both for polishing the surface of the glass substrate with a polishing solution containing a polishing agent. The method is characterized by additionally involving a heating step for heating the glass substrate, wherein the heating step is carried out after the first polishing step and before the second polishing step.
摘要:
Provided are a glass substrate for an information recording medium, which has both high strength and high flatness and can be manufactured at low cost, a method for manufacturing such glass substrate and an information recording medium using such glass substrate. The glass substrate for the information recording medium satisfies inequalities of 0.1≦(W1−W3)/W2≦5, where, W1 is an ion concentration at the center portion in the thickness direction of the glass substrate in a chemically reinforced region at the outer circumference end surface and the inner circumference end surface of the glass substrate and is the maximum value of K+ ion concentration, W2 is a Na+ ion concentration at a position where the K+ ion concentration is maximum, and W3 is a K+ ion concentration in a glass substrate region not chemically reinforced.
摘要:
Provided are a glass substrate for an information recording medium, which has both high strength and high flatness and can be manufactured at low cost, a method for manufacturing such glass substrate and an information recording medium using such glass substrate. The glass substrate for the information recording medium satisfies inequalities of 0.1≦(W1−W3)/W2≦5, where, W1 is an ion concentration at the center portion in the thickness direction of the glass substrate in a chemically reinforced region at the outer circumference end surface and the inner circumference end surface of the glass substrate and is the maximum value of K+ ion concentration, W2 is a Na+ ion concentration at a position where the K+ ion concentration is maximum, and W3 is a K+ ion concentration in a glass substrate region not chemically reinforced.
摘要:
Disclosed is a method for producing a glass substrate, which involves a first polishing step and a second polishing step both for polishing the surface of the glass substrate with a polishing solution containing a polishing agent. The method is characterized by additionally involving a heating step for heating the glass substrate, wherein the heating step is carried out after the first polishing step and before the second polishing step.
摘要:
According to an embodiment, a power transmitting device includes a power supply unit, a power transmitting coil, a first switch, a piezoelectric element, and a first switch controller. The power supply unit is configured to generate a transmission power by using power supplied to a power input terminal. Once the first switch is turned on, the first switch electrically connects an external power supply and the power input terminal until the first switch is turned off next time. The piezoelectric element is disposed at a position at which a weight of a placed power receiving device can be detected. The piezoelectric element is configured to generate a detection power according to the weight of the placed power receiving device. The first switch controller is configured to generate a starting power by the detection power and switches the first switch to on by using the starting power.
摘要:
A semiconductor device includes a circuit substrate, a first semiconductor chip disposed on the circuit substrate, a plurality of first spacers disposed on the first semiconductor chip, a second semiconductor chip which includes a first adhesive agent layer on a lower face thereof and is disposed on upper portions of the plurality of spacers, a wire which connects the circuit substrate to the first semiconductor chip, and a first sealing material which seals a gap between the first semiconductor chip and the first adhesive agent layer, wherein each height of the plurality of the first spacers is greater than height of the wire relative to an upper face of the first semiconductor chip.
摘要:
The invention provides a robot including a connection member relatively displaceably connected, and configured to control the displacement of the connection member based on a reference posture that can be adjusted, the robot including: a light emitting unit to emit a laser beam in a predetermined direction; a light receiving unit to receive the laser beam when the connection member is located in a detection posture that is away, by a preset displacement amount, from a predetermined zero posture; and a zeroing unit to relatively displace the connection member so as to make the light receiving unit receive the laser beam, and then to adjust the reference posture to the zero posture based on the posture of the connection member when the laser beam is received as well as on a relationship between the zero posture and the detection posture.
摘要:
A method for making a phosphate-treated galvanized steel sheet, including forming a phosphate film on the surface of a galvanized layer of a galvanized steel sheet using a phosphate treatment solution containing Zn2+ and Mg2+ so as to satisfy 2.0
摘要:
The object of the present invention is to provide a mandrel mill capable of producing a seamless pipe without flaws such as necking. The mandrel mill of the present invention includes a plurality of consecutively provided grooved-roll stands and a mandrel bar 3 provided in a roll groove array formed by the grooved-roll stands so as to continuously elongate a hollow shell 2. Roll grooves 4 of at least a first stand and a second stand are arranged so as to satisfy conditions represented by the following formulas (1) to (4): b≦10a+1.5 (1) b≧10a−0.2 (2) b≦−a+1.5 (3) b≧−a+1.15 (4) wherein a=S/R1, b=C/(R1−S).
摘要翻译:本发明的目的是提供一种能够生产无缺陷的无缝管的芯棒式无缝管,例如颈缩。 本发明的芯棒式无缝管轧机包括多个连续设置的带槽辊架和由凹槽辊架形成的辊槽阵列中的芯棒3,以便连续拉长中空壳体2。 布置最少的第一支架和第二支架以满足由下列公式(1)至(4)表示的条件:b≦̸ 10a + 1.5(1)b≥10a-0.2(2)b≦̸ -a + 1.5 (3)b≥-a + 1.15(4)其中a = S / R1,b = C /(R1-S)。
摘要:
A flaw detection apparatus and flaw detection method for automatically detecting the occurrence of a flaw in a mother tube manufactured by rolling a hollow shell using a mandrel mill are provided. A flaw detection apparatus (100) according to the present invention includes a wall thickness gauge (1) which is installed on the exit side of a mandrel mill (M) and which measures the tube wall thickness in each of the reducing directions of a hollow shell (P) in the #1-#5 stands of the mandrel mill, rolling load measuring devices (2) which measure the rolling load in the #1-#5 stands, and a decision unit (3) which determines whether there are flaws in the mother tube based on the measured value of the tube wall thickness in each of the reducing directions of the hollow shell (P) and the measured value of the rolling load in each stand. The decision unit (3) determines that a flaw has occurred in the mother tube when the measured value of the tube wall thickness in any of the reducing direction in the #1-#5 stands locally varies by at least a predetermined amount and the measured value of the rolling load in any of the #1-#5 stands locally varies by at least a predetermined amount.