43results about How to "Lower deformation temperature" patented technology

The invention discloses a pressing head and device for achieving densification of a spray deposition porous panel and application of the pressing head and the device. An installation end face and a working end are arranged on the pressing head, and a first pressure keeping area, a main pressing area, a prepressing area and a second pressure keeping area are arranged at the working end in the advancing direction of the pressing head. The main pressing area is a horizontal plane, the prepressing area is a slope and inclines from the main pressing area to the installation end face, and the two pressure keeping areas are used for preventing materials from flowing when densification is achieved. The four areas where smooth transition exists are arranged on the pressing head, continuous deformation of the materials is achieved in the densification process, and no fracture can be produced. Meanwhile, the invention discloses the device which is used for achieving densification and provided with the pressing head. When the panel is machined through the device, the pressing face of the main pressing area horizontally acts on a panel blank, and the pass reduction of the pressing head is larger than the inclination height of the prepressing area of the pressing head relative to the main pressing area of the pressing head. Uniformity of the microscopic structure of the panel blank can be kept in the densification process.

The invention relates to a multidirectional combined type circulating upsetting device and an upsetting method thereof, and belongs to the technical field of plastic forming. The upsetting device comprises a forward upsetting device and a lateral upsetting device. The method comprises the following steps of: in the forward upsetting process, prearranging bar blanks of which the cross sections aresquare in a forward upper die cavity of the forward upsetting device, so that the blanks are subjected to compressive plastic deformation downwards to fill in a forward lower die cavity finally; opening the forward upsetting device, taking the blanks out and putting the blanks in a lateral upper die cavity of the lateral upsetting device, with the side face facing downward, so that test samples are subjected to lateral upsetting deformation towards an lateral opening in a lateral lower die, and stopping pressing until a lateral punch presses to a parting surface of the lateral upsetting device; and repeating the steps for multiple times to perform multidirectional combined type upsetting circularly. By the upsetting device, superfine crystal blocks with uniform tissue can be prepared, so the upsetting device is used for preparing various superfine crystal materials such as pure metals, alloys, intermetallic compounds, composite materials, high polymer materials, semiconductor materials and the like.

An optical glass includes, by weight: 1% or more and 5% or less of silicon oxide (SiO2); 15% or more and 24% or less of boron oxide (B2O3); 0.1% or more and 3% or less of aluminum oxide (Al2O3); 1% or more and 14% or less of zinc oxide (ZnO); 35% or more and 45% or less of lanthanum oxide (La2O3); 5% or more and 10% or less of yttrium oxide (Y2O3); 5% or more and 13% or less of tantalum oxide (Ta2O5); and 0.5% or more and 3% or less of lithium oxide (Li2O).

The invention relates to a deformation material, prepared from the following components in parts by mass: 20-40 parts of SEEPS, 10-25 parts of white oil, 10-30 parts of a plasticizer, 15-35 parts of petroleum resin and 0.2-0.3 part of an antioxidant. According to the deformation material, the SEEPS is used as a base material, the white oil, plasticizer, petroleum resin and antioxidant are used as auxiliary materials, and through reasonable proportioning, the binding property of the deformation material can be increased, and the elasticity and intensity of the material are reduced, thereby obtaining the deformation material with a lower deformation temperature. As shown by test data, the deformation temperature of the deformation material is 70-90 DEG C, the deformation temperature is lower, so the deformation material is safer in the use process for children.

The invention provides a biodegradable oxygen absorbing plastic comprising a biodegradable substrate a sufficient concentration of reduced iron particles to adsorb oxygen in significant quantities and reduce the deformation temperature of the substrate substantially below the deformation temperature without iron particles present.

A transfer paper for transferring pattern is sequentially composed of substrate paper, adhesive layer, resin film layer, bottom ink layer, pattern layer and protecting oil layer. The resin film layer contains polyester resin or alkyd resin, cellulose resin, epoxy resin, solvent and assistant in a certain proportion.