Abstract: Dry reclamation of sodium silicate-bonded sands is reviewed in the paper. The keys of reclamation of sodium silicate-bonded sands are collapsibility and dewaxing rate. It is decrement of addition of sodium silicate-bonded sands by various kinds that the collapsibility of the sands is improved. It can obtain higher reclamation capacity that the sands are heated at a certain temperature to make the sodium silicate-bonded film brittle and then the sands are reclaimed by machine. Some suggestion has also been given.

Abstract: The poor corrosion resistance is the primary obstacle to expand the application of magnesium alloys. The corrosion behavior, corrosion classification, negative difference effect and corrosion interface of magnesium alloys are introduced. Influence of impurities, alloying elements such as Re, Al, Ca, Zn etc. and phase structure on corrosion resistance of magnesium alloys are detailed and the development of anti-corrosion magnesium alloys is presented.

Abstract: The same base metal Using ZX5, Zn7,GP welder and the weld microstructure of transition zone was compared in the same condition. The results as below: Arc-weld inversion power's frequency has a effecton on the improvement of the weld grain's thinning and segregation; the greater the power's frequency, the more successful the weld grain's thinning and segregation. Comparing with the other method, this approach is convenient and worth generalizing.

Abstract: Stellie6 alloy powder and Ni60 alloy powder were cladded respectively on the surface of Cr12MoV mould steel using a 5kW CO_2 laser. The microstructure and composites of laser cladding layer were investigated by means of OM and XRD,the microhardness and abrasion performance were also measured and studied. The results show that the laser cladding layer consists of cladding zone, bonding zone and heat affected zone(HAZ);because the substrate was quenched previously, there are second quenching zone and tempering zone in HAZ;the Stellie6 alloy cladding layer is composed of treelike solid solution of Co,carbonizations of Cr_(23)C_6,Cr_7C_3 ,CoCx and WC,etc; Ni-alloy cladding layer is composed of solid solution of Ni, super fine eutectic structure of NiCrFe, solid solution of γ-Fe, carbonizations of Cr_(23)C_6,Cr_7C_3 and boride of Cr_2B,etc;the average microhardness of Ni60 alloy cladding layer is higher than that of Stellie6 alloy;the abrasive resistance performance of Ni60 alloy cladding layer is also better than that of Stellie6 alloy cladding layer.

Abstract: A new method to improve the bonding strength of arc-spraying chromium coatings by arc-ultrasonic is presented. As the heat resource of arc spraying, the arc emits ultrasonic excited by high frequency modulation. Arc-ultrasonic improves the atomization of spraying materials and the bonding strength of spraying coatings, and the bonding strength increases with ultrasonic frequency and excitation voltage.

Abstract: Siming at the problems during the producing of electro-thermal upsetting valve,the heating process of electrical upsetting,perform forming and final forging process was studied using ANSYS and DEFORMAccording to the results of simulation,the optimized process parameters were obtained

Abstract: Oxidating failure of T22 and T91 boiler reheater tube caused by high temperature steam was analysed, as well as the concentration change of oxidating layer’s alloy element was measured by using energy spectrometer. The result shows that the capability of heating transfer of T22 and T91 tubes was decreased by oxide layer, which caused the temperature on tube wall increased to a much higher degree. The oxide layer consists of two parts, the inner part is the protective oxide film of Cr and the outer part is Fe_2O_3, and there were many small holes between these two parts. The outer oxide film peeled off and aggregated at the elbow of tubes so that led over heating or superburning of tube wall and explosion of tubes.

Abstract: Study status of the high strength and light-exceeding Mg-Li alloy is introduced, as well as study headway of Mg-Li binary alloy, Mg-Li-Al and Mg-Li-Si multi-alloy, production technique for increasing their property are narrated in detail. Moreover, application of alloy on aviation and spaceflight, weapon equipment, automobile is adopted widely.

Abstract: The iron compound phase morphologies and effect of Ti content on iron compound phase morphologies and mechanical properties are studied in ZL108 alloy which is produced by the pure aluminum ingot and the electrolytic low-titanium aluminum alloy ingot The iron compound phase morphologies and volume change while the Ti content changes in the ZL108 alloy The iron compound phase morphologies become chinese shape in microstructure of the ZL108 alloy containing 0130%Ti as originally they are fish bone shape in microstructure of the ZL108 alloy containing 0009 6%TiWhen it contains 0168%Ti in the ZL108 alloy, the iron compound phase morphologies are smaller chinese shape, the ultimate tensile strength 381MPaWith growth of Ti content, the greater volume of the iron compound phase morphologies like fish bone shape and chinese characters shape is observed, both strength and ductility are decreasing

Abstract: The excellent microstructure and mechanical properties of horizontal continuous casting ADI due to the particular techniques and quality of horizontal continuous casting is illuminated. The fine outlook to (continuous) casting ADI according to large numbers of continuous casting ADI application examples of China, the United States, European etc is also put forward.

Abstract: The devices of foam aluminum produced by low-pressure infiltrating method are introduced, and the parameters to affect the infiltrating height of liquid-state metal are also studied Meanwhile, performance requests of granules, selection means of technology parameters are summarized as well as its familiar defects and reasons are analyzed in the article

Abstract: Comparing with traditional quenching and tempering technology,the forging-remnant-heat hardening technology route for 40 Cr furning junction lead to an increase in the strength and handness,as well as the plasticity and ductility.It was fornd that the high-temperature-deformation heat treament not only improved the strength and ductility,but also saved the working-hour and energy.

Abstract: Aiming at the working characteristic of steel rolled guiding board, combining Composite design (mechanism) with foundry technology, using self-made compound additives, a steel rolled guiding board is made by WC particle reinforced gray cast iron matrix composite. The casting has smooth and bright surface, high (accuracy) dimensional tolerances. The composite layer thickness is distributed very well. Its range is (7～9 mm). Applications showed that the serving life of new composite is 5 times than that of the old one.

Abstract: Adjusted pressure casting is an advanced technique developed on the basis of counter pressure casting, characterized by its higher filling capacity and better feeding capacity, providing also vacuum metallurgy effects. The fundamental principle and properties for adjusted pressure casting is presented. The technique makes great contributions to the enhancement on mechanical property of casting; it is well adopted for precision casting of large-scale complicated thin-walled components, successful application on the manufacturing of Al alloy castings shows that this technique has profound developmental potential.

Abstract: The basic principles of foundry CAE technology, InteCAST-Steel7.0 and some applications of this software were introduced. The applications show that the software can aid technologists to optimize cast process by forecasting casting defects arising during mold filling and solidification processes.

Abstract: Thanks to its good comprehensive mechanical properties, Austempered Ductile Iron (ADI) has found a wide application in advanced countries. The techniques of austempering and the factors of affect properties of ADI were introduced. And then, based on the reality of our country, the paper gives a brief study on the prospect of ADI in China.

Abstract: The purifying principle of aluminum liquid called inclusion-excluding and gas-removing is also put forward through analysis of gas-inclusive relation. Furthermore the purifying method of flux and relative high-efficient inclusion-excluding flux is developed on the above basis. At last, the problem of purifying technique at home and abroad and the way to increase the purifying effect of melt-treatment of aluminum sheet are discussed.

Abstract: In this paper a kind of new method of the quantitative pour with the electromagnetic pump is put forward. Through analyzing the result of experimentation determined and the construction principle of the electromagnetic pump, the controlling program of the quantitative pour with the electromagnetic pump was empoldered. The quantitative pour with the electromagnetic pump is controlled by this controlling system, which can precisely control the amount of pouring and availably increase the accuracy of weight of casting and productivity of casting.

Abstract: The producing process of casting of back bridge housing has been introduced through working out reasonable smelting, molding, core-making technical parameter. The large quantity of nodular iron castings had back bridge housing are produced by using copula and handcraft molding.

Abstract: The microstructures change of super-high strength of austenite stainless still silk in multi-ply drawing were analysed.The results show that when the deformation degree excess 30% the deformation martensite can be found in the microstructure, and the greater deformation degree the more content of deformation martensite,and the smaller size of martensite grain.The reason of deduces deformation martensit in the drawing process is analysed also.

Abstract: Although space of slider depth in aluminum alloy die casting mold are larger than the minimum values proposed by several handbooks, sometimes they are too small for pulling core Based on the aspects of testing temperature, calculating space and practical application, the depth of slider in die casting mold that fitting slot with slider, selecting d7for slider is given

Abstract: A temperature-controlling system for high-frequency inductive-heating equipment is developed The hardware consists of industrial personal computer, temperature data collecting module, analog output card and thermocouples With Visual Basic60 as a development platform, the software is based on control algorithm The experiments show that the temperature-controlling system can reach to setting target in 3 minutes After balance the controlling error is smaller than 08% and easily to meet the need of hot-working processes

Abstract: Influences of conventional heat treatment and double-fined treatment on structure and properties of cold-punching die made of GCr15 steel were compared. The results show that its crystal and carbonization are fined and dislocated martensite become more after double-fined treatment; at the same time, there are more sheet-retained austernite in lathy martensite and around sheet martensite; broken-orifice changes from definitely cleavage brittleness fracture to definitely cleavage tenacity fracture. Double-fined treatment can effectively improve strength and toughness of GCr15 steel,accordingly increase service life of cold-punching die made of the steel.

Abstract: The alterative of Al-Si alloy have been reviewed The technical characteristics of different alterative, their alterative effects, total costs and their development are compared and proposed On the basis of analysis of exiting problems, it is thought impendent and necessary for the Al-Si alloy to develop a healthy、effective alternative with high quality as well as its related techniques The RE, which is an alternative of Al-Si alloy, has been paid more attention to by people, the use of Ce, which is a good alternative for Al-Si alloy , has no pollution, no broken bits, So it can save energy, increase production efficiency and decrease the wastage of alloys Therefore, it can reduce the total cost of product, and it has a good application prospect

Abstract: A choicing suspend agent and treatment process were introduced.Suspend casting process of graphitic steel roller was introduced also.

Abstract: The hydroforming is a new plastic forming technology,it is developed greatly and has extensive applications in recerent years.The hydroforming is classified three sorts,its development,theory,key issue and application is introduced.

Abstract: The strength,hardness and conductive property of Cu-Sn alloy specimen containning different doses of Sn was tested.The experimental result shows that strength,hardness of electric-train wire of copper alloy,but devaluat its conductive property.The best added dose of Sn is about 0.2 percent.

Abstract: The high manganese steel matrix composites reinforced with in-situ TiC particles have been made by casting process successfully, the relationship between Ti content and its microstructure and mechanical (property) has been studied well. The results show that microstructure of high manganese steel matrix composite is made of TiC particles, austenite and alloy cementite. Cementite is gradually coarsened and distributed at the boundary of crystal when Ti content is inceased. The more Ti content is, the more amount and hardness TiC particle is. For example, hardness of composites containing 5% Ti is HRC39 after it is heat treated, and is (2.6 times) that of pure high manganese steel. Moreover, the more Ti content is, the less impact toughness is. For example, impact toughness is 60 J/cm~2 after it is quenched.