43results about How to "Avoid softening and deformation" patented technology

An electric connector to be attached to a plate-like connection member having an edge portion, a plurality of insertion convex portions formed sideways at the edge portion, and a conductive portion formed on at least one of the front surface and the back surface of each insertion convex portion includes an insulating housing and a contact forming member made of a metal and held in the housing. The contact forming member includes a box-like portion having four walls and a connection member connecting contact extended from at least one of the walls of the box-like portion. The four walls define an insertion concave portion into which the insertion convex portion corresponding thereto is inserted along a predetermined insertion direction. The connection member connecting contact includes a contact portion that makes contact with the conductive portion of the corresponding insertion convex portion inserted into the insertion concave portion.

The invention discloses an environmentally friendly and degradable heat-insulating food packaging bag. The preparation method is as follows: 1) preparing a modified silica sol; 2) adding the prepared titanium dioxide sol to the modified silica sol to obtain a composite sol ; 3) Spray the composite sol on the surface of the substrate, dry it and carry out cyclic heat treatment, remove the coating after cooling, and obtain a composite powder after crushing and grinding; 4) Add sodium periodate to the sodium alginate solution, and obtain it through light-shielding reaction Modified sodium alginate; 5) Dissolve polyvinyl alcohol and add modified sodium alginate for reaction, the obtained product is added to molten polyethylene together with composite powder, and then citric acid, calcium stearate and talc are added The powder can be processed to obtain the required packaging bag. The food packaging bag has an excellent heat insulation effect, can effectively avoid the softening and deformation of the candy, has good biodegradability, can achieve complete degradation, meets environmental protection requirements, and is easy to popularize and apply.

The invention discloses a lost foam casting method for a heavy casting. The method comprises the following steps of: a. manufacturing a foam model; b. mounting a counter-deformation bracket: manufacturing the steel-structured counter-deformation bracket according to the size and the length of a workpiece and placing the counter-deformation bracket on the bottom of the foam model; c. painting: the thickness of the paint is not less than 4mm; d. drying: placing the painted foam model in a drying room for drying at the constant temperature of 50 DEG C; e. fixing core: placing the steel-structured bracket in an inner cavity of the foam model so as to fix the model, and putting the whole foam model into a sandbox together; f. boxing: enabling the sandbox containing the foam model to drop sand evenly, vibrating the sandbox during sand dropping, gradually enhancing the vibration amplitude with the increasing of added sand quantity, mounting a main runner and a branch runner of a ceramic tube, and placing a pouring cup; g. pouring: opening a vacuum pump for vacuum pumping before pouring; h. releasing negative pressure: after pouring, keeping the negative pressure for 8 to 15 minutes until solidification of an iron liquid, and then releasing the negative pressure; and i. cleaning.

The invention relates to an end high temperature protection structure and a traction rope end structure. The end high temperature protection structure includes a heat shrinkable sleeve that can be installed on the end, and a modified heat-resistant heat-insulating sleeve coated on the heat shrinkable sleeve. It is characterized in that: the heat shrinkable sleeve is made of heat shrinkable shape memory material. The traction rope end structure includes. The end for fixing the rope body, the heat shrinkable sleeve arranged on the surface of the end, and the modified glass fiber coated on the surface of the heat shrinkable sleeve, are characterized in that: the heat shrinkable sleeve is made of shape memory material. The present invention is beneficial in that under extreme high temperature conditions, the end temperature is prevented from being too high to affect the locking function, so that the rope body of the elevator rope end does not melt, deform, loosen or slip when heated, thereby completely avoiding accidents.

The invention discloses carbon, graphite / steel composite lifting tooling used for high-temperature furnaces, comprising a base, a heat-resistant steel cap frame, a graphite sheet frame, a graphite beam and a plurality of heat-resistant steel hooks, wherein, the base is composed of a heat-resistant steel bottom sheet and a low-density carbon / carbon composite sheet which is spread and fixed on the upper surface of the heat-resistant steel bottom sheet; the heat-resistant steel cap frame is fixed right above the base by being supported by a plurality of heat-resistant steel columns; the graphitesheet frame is arranged beneath the heat-resistant steel cap frame like a cushion; the graphite beam is positioned on the heat-resistant steel cap frame and is used for hanging the treated heater products in the high-temperature furnaces; the heat-resistant steel hooks are positioned above the graphite beam; the heat-resistant steel columns are fixed on the base; graphite tubes are sleeved outside the heat-resistant steel columns, and a plurality of graphite hanging structures are correspondingly arranged on the graphite beam. The tooling is simple in structure, convenient in assembly, low inmanufacturing cost, easy in use and operation and wide in application temperature range, and can effectively solve the practical problem that the existing carbon / carbon composite lifting tooling is inconvenient in operation, poor in performance, high in manufacturing cost and the like.

An electric connector (6) to be attached to a plate-like connection member (4; 100) having an edge portion (402; 102), a plurality of insertion convex portions (12; 103) formed sideways at the edge portion (402; 102), and a conductive portion (8; 8B; 103a, 103b) formed on at least one of the front surface (4a; 103a). The back surface (4b; 103b) of each insertion convex portion (12; 103) includes an insulating housing (13) and a contact forming member (14; 14A; 14B; 14B'; 14C; 14C'; 14D; 14E; 14F; 14G; 14H; 14J) made of a metal and held in the housing (13). The contact forming member (14; 14A; 14B; 14B'; 14C; 14C'; 14D; 14E; 14F; 14G; 14H; 14J) includes a box-like portion (33; 33D) having four.walls (41, 42, 43, 44; 41D, 42D, 43D, 44D) and a connection member connecting contact (34; 34B) extended from at least one of the walls of the box-like portion (33; 33D). The four walls (41, 42, 43, 44; 41D, 42D, 43D, 44D) define an insertion concave portion (45) into which the insertion convex portion (12; 103) corresponding thereto is inserted along a predetermined insertion direction (P1). The connection member connecting contact (34; 34B) includes a contact portion (475; 475A; 475B; 475C; 475D; 475E; 475F; 475G; 475J) that makes contact with the conductive portion (8; 8B; 103a, 103b) of the corresponding insertion convex portion (12; 103) inserted into the insertion concave portion (45).

The invention discloses a self-swinging double-wheel hoop directing device. The self-swinging double-wheel hoop directing device comprises a base, a lower support, an upper support, a swinging frame and a disc spring buffering device. The lower support is fixed to the base through bolts. A front supporting plate and a rear supporting plate of the lower support are correspondingly connected with the disc spring buffering device and the upper support through a pin shaft I-b and a pin shaft II. The lower support and the upper support are connected together through a pin shaft I-a by means of the disc spring buffering device. The swinging frame is connected to the upper support through a pin shaft III. A swinging locating device is arranged between the swinging frame and the upper support. The self-swinging double-wheel hoop directing device further comprises polyurethane rolling wheel assemblies. The polyurethane rolling wheel assemblies are mounted on the swinging frame through shaft holes and are each composed of polyurethane rubber wheels, a bearing seat, rubber wheel covers and a rubber wheel shaft. The number of the polyurethane rubber wheels in each polyurethane rolling wheel assembly is two. By the adoption of the self-swinging double-wheel hoop directing device, the problems that by means of a traditional hoop directing device, the buffering effect is poor, and wear to the rubber wheels is serious are solved.

The invention belongs to the field of coal gasification combustion, and relates to a combustion system and a burner. The combustion system includes a control system, a burner and a gasifier connected in sequence, the burner includes a cooling water jacket and an outer casing, the cooling water jacket is an annular cavity structure and is arranged inside the outer casing ; The first outer wall of the cooling water jacket forms the central channel of the burner, and the second outer wall of the cooling water jacket and the inner wall of the outer casing form a nitrogen channel. The invention can effectively avoid gasification by controlling the installation angle between the opposed burner with a special structure and the wall of the gasification furnace at 17°-20°, and controlling the swirl angle of the air outlet of the burner at 1°-30° Partial burning of the furnace, channeling and other problems.