SU77573A1 - Method for accelerated hardening of cement casting molds - Google Patents

Method for accelerated hardening of cement casting molds

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Publication number
SU77573A1
SU77573A1 SU389348A SU389348A SU77573A1 SU 77573 A1 SU77573 A1 SU 77573A1 SU 389348 A SU389348 A SU 389348A SU 389348 A SU389348 A SU 389348A SU 77573 A1 SU77573 A1 SU 77573A1
Authority
SU
USSR - Soviet Union
Prior art keywords
casting molds
cement casting
accelerated hardening
molds
carbon dioxide
Prior art date
Application number
SU389348A
Other languages
Russian (ru)
Inventor
И.А. Чернышев
Original Assignee
И.А. Чернышев
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by И.А. Чернышев filed Critical И.А. Чернышев
Priority to SU389348A priority Critical patent/SU77573A1/en
Application granted granted Critical
Publication of SU77573A1 publication Critical patent/SU77573A1/en

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Description

Прн.меиение форм из цементнопесчаных смесей в обычных уаюви х требует длительной их выдержки дл  затвердевани , что вызывает уменьшение производственной мощности литейного цеха.The mixing of molds from cement-sand mixtures in conventional wavus requires their long aging to harden, which causes a decrease in the production capacity of the foundry.

Дл  ускорени  процесса затвер: .девани  цементно-песч а«ых форм предлагаетс  подвергать их обработке углекислым газом (карбонизации ).In order to speed up the process of hardening: cement-sand cloths are proposed to be subjected to carbon dioxide treatment (carbonization).

Карбонизаци  может производитьс  продуктал1и горени  топлива (каменного угл , дров, коксика и т. п.), сжигаемого в переносных сушилах, а также в специальных устройствах.Carbonization can be produced by burning fuel (coal, firewood, coke, etc.) burned in portable dryers, as well as in special devices.

Продукты горени , содержащие углекислый газ, нагнетаютс  под давлением в рабочую полость формы прц помощи вентил тора или эжекторного устройства.Combustion products containing carbon dioxide are injected under pressure into the working cavity of the shape of the process using a fan or ejector device.

При карбонизации требуетс , чтобы температура нагрева нагнетаемых в форму газов или температура камеры, в которую помещатьс  формы дл  их обработки, не цревыщала точкв росы.During carbonization, it is required that the heating temperature of the gases injected into the mold or the temperature of the chamber in which the molds for processing are placed does not become wood dew points.

При этих услови х достигаетс  наилучший эффект применени  Зтлекислого газа на ускорение процесса твердени  дементных форм.Under these conditions, the best effect of the use of the acid gas on the acceleration of the hardening process of demental forms is achieved.

Вместо продуктов горени  может быть использован углекислый газ при температуре 10-25°С, причем в этом случае скор ость твердени  формы будет зависеть от степени концентрации газа в смеси с воздухом.Instead of combustion products, carbon dioxide can be used at a temperature of 10-25 ° C, in which case the rate of solidification of the form will depend on the degree of concentration of the gas mixed with air.

Дл  стабилизации содержани  влажности материала форм к продуктам горени  топлива можно добавл ть апределенное количество насыщенного вод ного- пара при условии, если он не будет служить причиной поглощени  углекислого газа с образованием углекислоты, удал емой из формы. В противном случае неминуемо будет про вл тьс  отрицательное действие пара на процесс карбонизации.To stabilize the moisture content of the mold material, a certain amount of saturated water-vapor can be added to the combustion products of the fuel, provided that it does not cause the absorption of carbon dioxide to form carbon dioxide that is removed from the mold. Otherwise, the negative effect of steam on the carbonization process will inevitably manifest itself.

Предмет изобретени Subject invention

Claims (2)

1. Способ ускоренного затвердевани  цементных литейных форм, о тл и ч а ю щ и и с   тем, что материал формы подвергаетс  обработке продуктами горени  ил.и чистым углекислым газом с температурой их подачи в полость формы или в камеру , в которую устанавливаютс  формы, не превышающей точку росы.1. A method for the accelerated hardening of cement casting molds, about 10 tons and so that the mold material is subjected to treatment with combustion products or with pure carbon dioxide with the temperature of their supply into the mold cavity or into the chamber into which the molds are installed, not exceeding the dew point. 679679 2. Прием по п. 1, отличающийс  тем, что, с целью стабилизации содержани  влажности мате-риала формы в процессе его2. The method of claim 1, characterized in that, in order to stabilize the moisture content of the material of the form during its карбонизации,, к продуктам гор-ени  топлива может добавл тьс  на первоначальной, стадии- процесса нлсыщенный . пар..carbonization, to the products of combustion of fuel can be added at the initial, stage-process, unsaturated. steam ..
SU389348A 1948-12-28 1948-12-28 Method for accelerated hardening of cement casting molds SU77573A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU389348A SU77573A1 (en) 1948-12-28 1948-12-28 Method for accelerated hardening of cement casting molds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU389348A SU77573A1 (en) 1948-12-28 1948-12-28 Method for accelerated hardening of cement casting molds

Publications (1)

Publication Number Publication Date
SU77573A1 true SU77573A1 (en) 1949-11-30

Family

ID=48252086

Family Applications (1)

Application Number Title Priority Date Filing Date
SU389348A SU77573A1 (en) 1948-12-28 1948-12-28 Method for accelerated hardening of cement casting molds

Country Status (1)

Country Link
SU (1) SU77573A1 (en)

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