CN103394646A - Disappearable riser - Google Patents

Abstract

The invention belongs to the field of risers for casting and relates to a disappearable riser in casting. The disappearable riser comprises 80-85% of paper, 2-10% of quartz sand, 1-2% of borax, 1-2% of lignin, 1-2% of hollow beads, 1-2% of an exothermal agent, 1-2% of an igniter and 1-2% of a binder. The disappearable riser is prepared from paper as a main raw material. A preparation method of the disappearable riser improves the traditional preparation method utilizing quartz stone as a main raw material. In casting, the disappearable riser is combusted into a pile of ashes at a high temperature and then can be discharged with a discharged casting. The discharged disappearable riser ashes can be separated by gentle tapping without post-cooling riser disassembling. The disappearable riser is convenient for use and improves production efficiency.

Description

A kind of rising head that disappears

Technical field

The invention belongs to casting and use the rising head field, relate in particular a kind of rising head that can disappear in casting process.

Background technology

Rising head is heat insulating products commonly used in casting field, and this rising head needs to install before casting, needs to remove after casting, and, because the casting temperature of casting aftershaping is very high, has brought the inconvenience of arriving for very much the dismounting of rising head, has reduced production efficiency.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of rising head of dismantling that can automatically disappear in casting, not need.

For solving the problems of the technologies described above, the invention provides a kind of rising head that disappears, the primary raw material and the component thereof that comprise have: paper 80 ~ 85%, quartz sand 2 ~ 10%, borax 1 ~ 2%, lignin 1 ~ 2%, cenosphere 1 ~ 2%, exothermic mixture 1 ~ 2%, igniting agent 1 ~ 2%, bonding agent 1 ~ 2%.

Preferably, exothermic mixture is one or more the mixture in carbon dust, aluminium powder, magnesium powder.

Preferably, igniting agent is one or more the mixture in iron oxide, manganese dioxide, potassium nitrate, potassium permanganate.

Preferably, bonding agent is one or both the mixture in waterglass, epoxy resin.

A kind of preparation method of the rising head that disappears, carry out according to following steps:

The first step, be placed in crusher for crushing with paper, and paper is pulverized and is placed in mixer, and adds quartz sand, stone borax, lignin, cenosphere, exothermic mixture, igniting agent, bonding agent to stir mixing water and stir, form slurry in mixer;

Second step, utilize the mould molding rising head with above-mentioned slurry, and be placed in drying machine drying, dries by the fire to moisture in rising head not higher than 0.1%, obtains the finished product rising head.

Paper in the present invention can be the secondhand book that reclaims, newspaper, carton etc., and cost is low.

adopt the beneficial effect of technique scheme to be: rising head formula and the making of technical solution of the present invention, employing paper is main raw material(s), change the preparation method take quartz etc. as primary raw material in traditional handicraft, adopting paper is the rising head that raw material produces, when casting, through high temperature, rising head can be become ashes by high-temp combustion, but, adopt the mould setting to make during due to making, the ashes that produce also can keep the shape of original rising head although the rising head after high-temp combustion becomes ashes, not there will be the phenomenon of caving in, can be taken out of along with the discharging of foundry goods, after taking out of, directly by rapping, can make rising head separate, do not need to wait for that rising head after cooling disassembles it, convenient to use, improved production efficiency.

The specific embodiment

Below technical scheme of the present invention is described, so that those skilled in the art understand.

A kind of rising head that disappears, the primary raw material and the component thereof that comprise have: paper 80 ~ 85%, quartz sand 2 ~ 10%, borax 1 ~ 2%, lignin 1 ~ 2%, cenosphere 1 ~ 2%, exothermic mixture 1 ~ 2%, igniting agent 1 ~ 2%, bonding agent 1 ~ 2%, exothermic mixture is one or more the mixture in carbon dust, aluminium powder, magnesium powder, and igniting agent is one or more the mixture in iron oxide, manganese dioxide, potassium nitrate, potassium permanganate.

Embodiment one:

But 80 kilograms of paper are pulverized in pulverizer, pulverizing is placed in mixer, and add 10 kilograms of quartzs, 2 kilograms of boraxs, 2 kilograms of lignin, 1 kilogram of cenosphere, 2 kilograms of exothermic mixtures, 2 kilograms of igniting agents, 1 kilogram of bonding agent and appropriate water in mixer, fully stir, be stirred to the state of slurry, slurry is beneficial to shaping grinding apparatus carries out moulding, and be placed in dryer and dry, dry to moisture in rising head heavy less than 0.1% of rising head weight.

Above-mentioned invention is exemplarily described; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as this non-essential improvement that has adopted method design of the present invention and technical scheme to carry out; or without improving the design that will invent and technical scheme, directly apply to other occasions, all within protection scope of the present invention.

Claims (5)

1. rising head that can disappear, it is characterized in that: the primary raw material and the component thereof that comprise have: paper 80 ~ 85%, quartz sand 2 ~ 10%, borax 1 ~ 2%, lignin 1 ~ 2%, cenosphere 1 ~ 2%, exothermic mixture 1 ~ 2%, igniting agent 1 ~ 2%, bonding agent 1 ~ 2%.

2. a kind of rising head that disappears according to claim 1 is characterized in that: described exothermic mixture is one or more the mixture in carbon dust, aluminium powder, magnesium powder.

3. a kind of rising head that disappears according to claim 1 is characterized in that: described igniting agent is one or more the mixture in iron oxide, manganese dioxide, potassium nitrate, potassium permanganate.

4. a kind of rising head that disappears according to claim 1 is characterized in that: described bonding agent is one or both the mixture in waterglass, epoxy resin.

5. the preparation method of a kind of rising head that disappears according to claim 1 is characterized in that: according to following steps, carry out:

The first step, be placed in crusher for crushing with paper, and paper is pulverized and is placed in mixer, and adds quartz sand, stone borax, lignin, cenosphere, exothermic mixture, igniting agent, bonding agent to stir mixing water and stir, form slurry in mixer;

Second step, utilize the mould molding rising head with above-mentioned slurry, and be placed in drying machine drying, dries by the fire to moisture in rising head not higher than 0.1%, obtains the finished product rising head.