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35 results about "Gram-force" patented technology

Similarly, a gram-force is 9.806 65 mN, and a milligram-force is 9.806 65 μN. One kilogram-force is approximately 2.204622 pound-force. Kilogram-force is a non-standard unit and is classified in SI Metric System as a unit that is unacceptable for use with SI.

Realization method for lead bonding thick aluminum wire

The invention relates to the technical field of the semiconductor packaging, in particular to a realization method for lead bonding a thick aluminum wire. The method comprises the following four important operation key points of designing and optimizing a chopper, detecting chip surface aluminum layer thickness, optimizing and matching a bonding technical parameter, and detecting the bonding strength. As the thick aluminum wire is unlikely to oxidize, the production technology is simplified, and the cost can be obviously lowered. Meanwhile, the thick aluminum wire has the advantages of small contact resistance, low device power consumption, high bonding strength and the like. The chip aluminum layer thickness is detected by 85% phosphoric acid solution so as to ensure that the aluminum layer thickness is more than 5.0mum when the thick aluminum wire is lead bonded, and craters can be prevented from generating in the operation process. The technical parameter adopts initial power pressure, and the craters can be prevented by regulating the initial power pressure according to the practical situation. Whether the welding strength reaches the standard is judged by measuring the breaking force of the bonding wire by a gram force meter. According to the realization method for lead bonding the thick aluminum wire, the cost can be obviously lowered, the device power consumption is lowered, and the product reliability can be improved.
Owner:SICHUAN LIPTAI ELECTRONICS

Flame and particulate resistant knit article

An article of protective clothing comprising a durable multilayer fabric laminate formed fromi) a first flame resistant knitted fabric made from yarns, the fabric having an average fabric modulus of 8 grams-force of greater;ii) a flame-resistant nonwoven fabric having a machine direction and a cross direction, and consisting of a plurality of continuous filaments having a diameter of less than 1000 nm, the filaments in the fabric being substantially oriented parallel with the machine direction and having stretch and recovery in the cross direction; andiii) a second flame resistant knitted fabric made from yarns, the fabric having an average fabric modulus of 8 grams-force of greater;wherein the nonwoven fabric is positioned between and coextensive with the first and second flame-resistant knitted fabrics; the nonwoven fabric being attached to the first knitted fabric by a set of first attachment points, the attachment points defining a first unattached area having a first effective diameter; the nonwoven fabric also being attached to the second knitted fabric by a set of second attachment points, the attachment points defining a second unattached area having a second effective diameter; wherein both the first unattached area and the second unattached area each have a value A, in square centimeters, according to the formula:C<A< / =(14*B)+100the value B being the sum of the average fabric modulus of the first knitted fabric and the average fabric modulus of the second knitted fabric, in grams-force; and the value C being 5 square centimeters.
Owner:DUPONT SAFETY & CONSTR INC

Plug brick and plug wall

InactiveCN101476358ALow costSimplify the wall processWallsBrickGram-force
The invention relates to an inserting brick and an inserting wall, and belongs to the field of building brick and wall building technology. The inserting brick comprises a convex clip, a concave ditch, an upper corner and a lower corner. The inserting wall is formed by combining the inserting bricks, semi-inserting bricks, tee-joint inserting bricks and corner inserting bricks and inserting the bricks upwards in a staggered form. The inserting wall is characterized in that the convex clips can clamp the concave ditches when the inserting bricks insert upwards into the inserting wall in the staggered form, so that the horizontal swinging range of the inserting bricks is small; and the convex clips and the concave ditches have the autocorrection function. When the inserting bricks insert upwards into the inserting wall in the staggered form, upper corners of lower inserting bricks and lower corners of upper inserting bricks can be manufactured into a clamping type and can also be manufactured into being clamped into the shape of trough lines which can be filled by concrete. An inserted and integrated D-shaped wall body is hollow, can be filled by direct casting and does not need a gram force baffle plate. The inserting brick and the inserting wall greatly simplify the wall building technology, and greatly reduce the cost of the wall body of a building, and the wall body of the inserting wall is not cracked.
Owner:徐伟善
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