78results about How to "Expanded size range" patented technology

A mobility spectrometer to measure a nanometer particle size distribution is disclosed. The mobility spectrometer includes a conduit and a detector. The conduit is configured to receive and provide fluid communication of a fluid stream having a charged nanometer particle mixture. The conduit includes a separator section configured to generate an electrical field of two dimensions transverse to a dimension associated with the flow of the charged nanometer particle mixture through the separator section to spatially separate charged nanometer particles of the charged nanometer particle mixture in said two dimensions. The detector is disposed downstream of the conduit to detect concentration and position of the spatially-separated nanometer particles.

The present invention relates to a hanging clamp for different size rods, which comprises a L-shaped base having a body, a rotatory piece capable of rotating at a predetermined angle, as well as a clamping member also capable of rotating at a predetermined angle; wherein a retaining portion projects out of one end of body, the rotatory piece is pivoted at a proper position of body by means of a first pivotal axis, while the clamping member is pivoted at one end of rotatory piece by using a second pivotal axis; furthermore, the clamping member in response to the retaining portion is provided with an arc-shaped clamping surface having a concentric circle, whereby enabling the rotatory piece pivotally rotate the clamping member to clamp different size rods, by using the changeable distance between the clamping surface and the retaining portion; prefectably, the clamping member can also pivotally rotate to increase or decrease said changeable distance between the clamping surface and the retaining portion, so as to expand the clamping size range of hanging clamp for different size rods by using the changeable distance of double pivotal axis.

The invention relates to bending equipment, and belongs to the technical field of bending machining. The bending equipment comprises a rack, a clamping unit, a core rod unit, a shifting unit and a bending unit, wherein the clamping unit, the core rod unit, the shifting unit and the bending unit are arranged on the rack, and the bending unit comprises a left bending arm and a right bending arm which are hinged through a bending rotating shaft; and the clamping unit comprises a transverse floating mounting frame which can be transversely arranged on one bending arm in a floating and sliding mode, and a clamping device which is arranged on the transverse floating mounting frame and is used for clamping a to-be-bent workpiece. The clamping unit is arranged to comprise the transverse floating mounting frame and the clamping device, so that the clamping device can freely move in the transverse direction in a floating mode relative to the correspondingly bending arm in the bending process, sothat restriction of a heat exchanger in the floating transverse direction can be reduced, the position change in the bending process can be better matched, so that the product yield can be improved,and the bending equipment can be widely applied to the field of manufacture of evaporators and the like.

The invention discloses a square rectangular steel pipe with corner thickening and cold-heat composite molding and a preparation method thereof. The outer corner radius of the square rectangular steelpipe satisfies the following conditions: when t is less than or equal to 6mm, R is greater than 0 and less than 2.0t; when t is greater than 6 and less than or equal to 10mm, R is greater than 0 andless than 2.5t; and when t is greater than 10mm, R is greater than 0 and less than 3.0t, wherein t is the wall thickness of the straight pipe section of the square rectangular steel pipe, R is the outer corner radius of the four corners of the square rectangular steel pipe, and the corner wall thickness of the square rectangular steel pipe is between 1.0t and 1.8t. According to the square rectangular steel pipe with corner thickening and cold-heat composite molding and the preparation method thereof, the hot forming technology is introduced into a traditional roll-bending forming process, thatis, the local induction heating technology. High temperatures can reduce the forming force of materials and improve the forming performance of the materials; and meanwhile, the phenomena of the residual stress caused by work hardening and cracking which is possibly caused can be eliminated, a corner profile of the square rectangular steel pipe subjected to cold-heat composite molding is dense, the radii of an inner corner and an outer corner are small, the angle of the corner is close to 90 degrees, and the corner is thickened.

An integrated circuit assembly includes a lead frame having a plurality of leads with inner portions. A thermally-conductive clip member is bonded to the inner portions of the leads such that the clip member is electrically isolated from yet thermally coupled to the lead frame. An integrated circuit die is bonded and thereby thermally coupled to the clip member. The die is electrically connected to the wire die by wire bonds. Encapsulant material is disposed over the inner portions of the leads and at least a portion of the clip member, and encapsulates the die and the wire bonds.

A method of producing an ultrathin-wall metal tube by a cold drawing method includes a diameter-expanding drawing method, in which an entry solid die, the diameter of which increases, remains constant or decreases from the engaging entry side toward the finishing exit side, and a delivery solid die, the diameter of which decreases at least in the vicinity of the engaging entry, are arranged in series and in an abutting relation on the same pass line. A tapered plug, the diameter of which increases from the engaging entry side toward the finishing exit side, floats along the pass line, whereby in the entry solid die region, the wall thickness is reduced while the mid-wall diameter of a hollow shell is being expanded between the solid die and the plug, and in the delivery solid die region, the tapered plug floats by performing reduction working of the outside diameter.