Abstract The results of the reclamation spent moulding sands with inorganic binder in prototype vibratory reclaimer REGMAS - are presented paper. Spent modified water-glass, burned as well not burned, present a form agglomerates (lumps), were subjected to processes. During individual cycles efficiency and vibrations amplitudes determined physicalchemical strength investigations performed for obtained reclaim materials. was used component matrix water-glass Floster S technology, which...

Abstract The results of own studies concerning the application a new additive to CO 2 -hardened sodium water glass foundry sands are presented. additive, which is composition aqueous solutions modified polyalcohols, has been designated by symbol “B” and used as an agent improving sand knocking out properties. scope included various mechanical technological properties mixtures, such permeability, friability, life cycle cores Two types with different values silica modulus density, R145 R150,...

The paper presents the basic issues related with post-reclamation dust management by using technique of agglomeration granulation. Post reclamation derives from different types molding sands and has susceptibility for granulation process. Theoretical aspects are discussed along mechanism this process presented in current literature. Additionally describes experimental test stand post scope planned scientific research.

Abstract The results of research on the possibility using a gaseous medium (hot air) as hardening agent for inorganic binders were discussed, and tests reclamation waste moulding sands carried out. programme also included use modernized test stand foundry with agents pilot plant sand reclamation. Cores made examined basic technological properties used in moulds trial knocking out castings. Two types tested, i.e. modified water glass designated Binder A and, comparison, reference material...

The essence of ablation casting technology consists in pouring castings single-use moulds made from the mixture sand and a watersoluble binder.After mould with liquid metal, while is still solidifying, destruction (washing out, erosion) takes place using stream cooling medium, which this case water.This paper focuses on selection moulding sands hydrated sodium silicate for used casting.The research based use Cordis binder produced by Hüttenes-Albertus Company.It new-generation inorganic...

The ablation casting technology consists in pouring castings single-use moulds made from the mixture of sand and watersoluble binder.After mould with liquid metal, while is still solidifying, destruction (washing out, erosion) takes place using a stream cooling medium, which this case water.The following paper focuses on selection moulding sands hydrated sodium silicate technologies for devoted to aluminum alloys.It has been proposed use different types water-soluble binder, silicate.The...

Abstract A technology of sands with water glass hardened by liquid esters is a cheap and ecologic method producing moulding sands. Due to these advantages, this still very important in several foundry plants for production heavy iron steel castings. Reclamation the mixed core generates significant amounts dusts, which require further treatments their reuse. The results investigations pressureless granulation dusts generated dry mechanical reclamation process mixture consisting app. 90 % from...

Abstract The results of investigations the granulation process foundry dusts generated in dry mechanical reclamation used sands, where furan resins were binders are presented paper. Investigations concerned producing granules determined dimensions and strength parameters. Granules formed from mixture consisting 50 mass% obtained after furane sands mass % with bentonite. Dusts bentonite water as a binder allowing sands. following parameters ready final product determined: moisture content...

Successful casting demands that during pouring of the foundry mould with molten metal cavity suffers no deformation.This, in turn, use binding materials can give base sand adequate strength.The main bonding are clay binders.The industry uses minerals rich clay, such as kaolinite, halloysite, hydromica, montmorillonite, polygorskite, vermiculite and allophane.Due to their capacity, montmorillonites most interesting all plastic rocks.The basic rock containing used a common material for...

Bentonites and clays are included in the group of drilling fluids materials.The raw materials mainly clay minerals, which divided into several groups, like montmorillonite, kaolinite, illite, biotite, muscovite, nontronite, anorthoclase, microcline, sanidine or rutile, differing chemical composition crystal lattice structure.Clay minerals have a layered structure forming sheet units.The layers merge sheets that build up to form mineral.The aim studies carried out ŁUKASIEWICZ Research Network...

The ablation casting technology consists in pouring castings single-use moulds made from the mixture of sand and watersoluble binder.After mould with liquid metal is destructed (washed out) using a stream cooling medium, which this case water.The process takes place while still solidifying.The following paper focuses on testing influence modified aluminum alloy casts properties produced hydrated sodium silicate binder.The authors showed that best kind moulding sands for Al will be those...

The aim of this study is to demonstrate the possibility using moulding sands based on inorganic binders hardened in a microwave chamber technology ablation casting aluminium alloys.The essence consists that mould with water-soluble binder continuously washed water immediately after being poured liquid alloy until its complete erosion takes place.The application an environmentally friendly improves ecology whole process, while hardening allows moulds be made from sand mixture containing only...

The investigation results of the physical, chemical and strength properties dusts from bentonite sands treatment plants as well reclamation processes analogous spent sands, are presented in paper. aim investigations was determination preliminary conditions allowing to pelletising bowl granulator. verified examination methods were applied for testing such dust features as: specific density, bulk density loosely built compacted materials related them porosity, ignition losses reaction (pH)....

The foundry industry in Poland and EU member states is growing steadily.The alloys based on ferrous metals (cast steel cast iron) largely contribute to this upward trend.Currently, foundries are facing the problem of increasing requirements, which enforce production castings characterized by high dimensional accuracy surface smoothness with parallel elimination casting defects.Castings mostly made moulding sand mixtures, also subject more stringent requirements meet above-mentioned...

The aim of this study is to demonstrate the possibility using moulds made from environmentally friendly sands with hydrated sodium silicate in modified ablation casting.The casting technology primarily intended for castings diversified wall thickness and complex shapes sand moulds.The article presents effect binder content hardening time on bending strength R g u moulding binders based hardened by microwave technology.The research was develop an optimal composition that would provide...

The results of mechanical reclamation waste moulding sands with furfuryl resin and activators new generation are presented.The aim the research described in this study was to determine what effect addition reclaim obtained process dry could have on properties furan sands.The sand supplied by one domestic foundries after initial subjected a two-step proper process.The following tests were carried out reclaim: pH, S N content, loss ignition comprehensive sieve analysis.The next used as...

The aim of the present work is to compare properties self-hardening moulding sands based on inorganic binders sodium silicate different modules, geopolymer and phosphate prove they can be used in ablation casting process. Ablation a process which, directly after pouring liquid alloy, mould sprayed with water until it completely eroded finished, cooled obtained. use proecological water-dilutable binder makes possible recover sand matrix drying suspension that remains Moulding were prepared...

Selfsetting sands with furan resins are still the largest use of SMS synthetic resins. They can be used to prepare such forms and cores - different sizes shapes, for casting all type alloys [1-3]. A reclamation spent moulding sands, as a recycling method waste foundry materials, originated from production cycle, constitutes very serious problem each plant, related first environment protection also rational material management. The results resin strength tests matrix pure quartz sand...

Abstract The results of investigations the reclamation spent moulding and core sands, originated from one Polish foundry plants, are presented in paper. Four mixtures consisting two types sands (spent sand sand) were subjected to regeneration process. Each tested mixture consisted an inorganic type organic sand. Proportions mutual fractions was 70%-30% representative for waste foundry, which these originated.

Production technology of investment casting involves transmitting the elements shape, dimensions and properties by filling in appropriate liquid metal ceramic forms reproduccd a model made wax removed melting it. The manufacturing process lost consists number technological operations: preparing models their assembling units, preparation mixture, successive layers debris, an autoclave, drying samples at 100 °C, heating temperatures ranging from 400 to 700 °C. So far, was based on use which...