1635results about How to "Improve solderability" patented technology

A composite aluminium panel comprising two parallel plates and / or sheets secured to the peaks and troughs of a corrugated aluminium stiffener sheet between the parallel plates and / or sheets, wherein the corrugated aluminium stiffener sheet is made from an aluminium alloy rolled sheet of composition (in weight percent): Mg 1.5-6.0, Mn 0.3-1.4, Zn 0.4-5.0, Fe up to 0.5, Si up to 0.5, Zr up to 0.30; optionally one or more of Cr 0.05-0.3, Ti 0.01-0.20, V 0.05-0.25, Ag 0.05-0.40, and Cu up to 0.40; and other elements up to 0.05 each, 0.15 total, with a balance of Al; and having in an H-condition or in an O-condition a ratio of PS / UTS in the range of 0.4 to 0.9 and having good roll formability.

The leadless tellurate low melting glass is used as binder phase for preparing electron paste. Said glass is mixed with functional powder to produce composite powder, which is then dispersed in organic solution to prepare thick paste, i.e. electron paste, used for making various kinds of electron devices. Said low melting glass, during sintering, melts-out and takes effect of adhering. The sintering temperature is between 350-600deg.C when making electron device. The components of the glass are (mass percentages): TeO2 10-90%,V2O5 0-40%,SiO2 0-5%,B2O3 0-5%,ZnO 0-10%,Bi2O3 0-20%,Sb2O3 0-8%,Al2O3 0-4%,SnO2 0-6%,Ag2O 0-10%,BaO 0-5%,MgO+CaO 0-5%.

The invention discloses a lead-free and cadmium-free electrode silver slurry for piezoelectric ceramics. The lead-free and cadmium-free electrode silver slurry for piezoelectric ceramics is prepared from the following raw materials in percentage by weight: 50 to 75 percent of conducting silver micro powder, 0.5 to 5 percent of inorganic additive, 1 to 15 percent of lead-free glass powder and 15 to 45 percent of organic carrier. The lead-free and cadmium-free electrode silver slurry is technologically advantaged in that a boron-bismuth-silicon-zinc-titanium glass system is designed, the traditional lead-containing glass can be completely substituted, a lead-free product is realized, the system glass can react with a piezoelectric ceramic substrate to form a firm interface between an electrode and the substrate, and the adhesion force of the interface is more than 15N / mm<2>.

The invention discloses a leadless and no-halogen tonal, comprising following components with percent by weight: alloy powder 80-98 and welding flux 2-20; said alloy powder is one of SnAgCu, SnAgNi, SnAgBiCu, SnAgBiSb, SnCu and SnAg; said welding flux concludes following components with percent by weight: modified resin antioxidant 30-60, organic acid activating agent 5-15, thixotropic agent 4-14, plasticizing agent 2-6, plasticizing agent 0.4-2, inhibitor 0.1-0.5 and organic solvent 20-40; said modified resin antioxidant comprises following components with percent by weight: modified rosin resin 80-90, anti-oxidant 2-8, and reducer 2-8. The tonal is characterized by good thixotropic behavior, no oxidation, no dry welding and no short circuit.

A pencil-type glow plug for a self-igniting internal combustion engine is described. The pencil-type glow plug includes a plug body in which a combustion chamber pressure sensor is integrated, and a bar-shaped heating element that protrudes out from the plug body at one end, into the combustion chamber of the internal combustion engine. A force-measuring element of the combustion chamber pressure sensor is accommodated behind the heating element, which moves axially under the influence of force. The force-measuring element is sealed against combustion chamber gases by a steel diaphragm made of a stainless precipitation-hardened maraging steel.

Steel compositions contain micro-alloying additions of boron and titanium, with yield strength of at least 100 ksi (690 MPa), excellent toughness and good weldability. Boron additions are used to increase hardenability. Strong nitride formers, such as titanium, may be added to the steel composition in order to prevent boron nitrides from forming. These compositions may be cooled from hot rolling in air or using accelerated cooling. After air cooling, the composition may be quenched or quenched and tempered. The compositions are suitable for high strength line pipes (for example, X100 in API 5L standard) and other applications.

An austenitic stainless steel with minimized deformation by heating and cooling treatment after cold working, which consists of, % by mass, C: 0.03% or less, Si: 2 to 4%, Mn: 0.1 to 2%, P: 0.03% or less, S: 0.03% or less, Ni: 9 to 15%, Cr: 15 to 20%, N: 0.02 to 0.2%, Nb: 0.03% or less, each of Mo and Cu or a total of Mo and Cu: 0.2 to 4%, and the balance Fe and impurities, and satisfies the following formulas (1) and (2). This steel can also have good weldability when the following formula (3) is also satisfied in addition to the formulas (1) and (2);16.9+6.9Ni+12.5Cu−1.3Cr+3.2Mn+9.3Mo−205C−38.5N−6.5Si−120Nb≧40  (1)450−440(C+N)−12.2Si−9.5Mn−13.5Cr−20(Cu+Ni)−18.5Mo≦−90  (2)8.2+30(C+N)+0.5Mn+Ni−1.1(1.5Si+Cr+Mo)+2.5Nb≦−0.8  (3)wherein each element symbol in the formulas (1), (2) and (3) represents the content, % by mass, of each element included in the steel.

The invention discloses an aluminium alloy profile for a building template, and a preparation method thereof. The aluminium alloy profile comprises the following components in percentage by weight: 0.85-0.95 percent of magnesium, 0.06-0.65 percent of silicone, 0.15-0.20 percent of copper, 0.05-0.08 percent of manganese, 0.03-0.05 percent of zirconium, 0.04-0.06 percent of chromium, 0.008-0.012 percent of titanium, 0-0.2 percent of iron, 0-0.10 percent of zinc and the balance of aluminium. The aluminium alloy profile provided by the invention has the advantages that the tensile strength is more than 300 MPa, the yield strength is more than 260 MPa, the breakage elongation percentage is more than 12 percent, the tenacity, the weldability and the corrosion resistance are obviously improved compared with that of an original 6061 alloy, the pendulum impact value is more than 20 J / cm<2>, the welding coefficient is not less than 0.6, smaller quench sensitivity is provided, and critical quenching speed is dropped from 10 DEG C / S of the original alloy to 7 DEG C / S; during the processing of the aluminium alloy profile, air cooling is adopted to process an extrusion outlet with the temperature of 450 DEG C in a high-temperature segment as well as an extrusion outlet with the temperature of being smaller than or equal to 25 DEG C in a low-temperature segment, while a moderate-temperature segment, namely a quench sensitive area with the temperature of 450-250 DEG C utilizes water mist to replace direct water-cooling, so that the difficulty for controlling cross section deformation of the profile in the production field is greatly reduced.