CN106799458A

CN106799458A - A kind of cast paint

Info

Publication number: CN106799458A
Application number: CN201510830235.8A
Authority: CN
Inventors: 黄亚楠
Original assignee: Qingdao Gerunde New Material Co Ltd
Current assignee: Qingdao Gerunde New Material Co Ltd
Priority date: 2015-11-25
Filing date: 2015-11-25
Publication date: 2017-06-06

Abstract

The present invention relates to a kind of cast paint, including roughing sand, binding agent, curing agent and lubricant, the roughing sand is made up of 5%~10% iron cement, 90%~95% quartz sand, and described percentage is mass percent；The binding agent accounts for the roughing sand quality 30%~40%, and the curing agent accounts for the binding agent quality 18%~22%, and the lubricant accounts for the binding agent 5%~9%；Also include modified activator, the activator accounts for the roughing sand quality 10%~20%.Cast paint of the invention makes coating possess preferable adsorptivity, it is ensured that the quality of casting by adding the modifying agent for activating.

Description

A kind of cast paint

Technical field

The present invention relates to casting field, more particularly to a kind of cast paint.

Background technology

Cast paint is that stop buffer action is played in the middle of casting and casting mold, reaches Sand sticking-resistant purpose.Evaporative pattern Casting, also known as casting is carried out, is to bond the paraffin similar to casting dimension shape or bubbles model to be combined into mould Type cluster, brushing paint and after drying is embedded in quartz sand and shakes moulding, pours into a mould under negative pressure, makes model gas Change, liquid metals occupies modal position, and the casting method of casting is formed after solidification cooling.Lost foam casting is applied The performance of material will directly affect the external and inherent quality of casting, and coating will rise in the casting process of evaporative pattern To exhaust, support, insulation and the effect of absorbent foam lipid residue, wherein, good liquid adsorptivity It is a kind of more important performance of lost foam paint, coating possesses the performance and just can guarantee that the residue of foam will not be residual Inside and the appearance of casting are left to, so as to ensure the quality of casting.Existing lost foam casting coating has good Good gas permeability, suspension, with refractoriness higher, but does not possess liquid adsorptivity but, have impact on The quality of casting.

The content of the invention

Instant invention overcomes the deficiencies in the prior art, there is provided a kind of preferable lost foam casting of liquid adsorptivity is applied Material.

The technical solution adopted by the present invention is：A kind of cast paint, including roughing sand, binding agent, curing agent and Lubricant, the roughing sand is made up of 5%~10% iron cement, 90%~95% quartz sand, and described hundred Divide than being mass percent；The binding agent accounts for the roughing sand quality 30%~40%, and the curing agent accounts for described Binding agent quality 18%~22%, the lubricant accounts for the binding agent 5%~9%；Also include modified activation Agent, the activator accounts for the roughing sand quality 10%~20%.

Preferably, the roughing sand is made up of 5% iron cement, 95% quartz sand, and described percentage is Mass percent；The binding agent accounts for the roughing sand quality 32%, and the curing agent accounts for the binding agent quality 18%, the lubricant accounts for the binding agent 6%；Also include modified activator, the activator accounts for described Roughing sand quality 12%, the modifying agent is activated carbon, and the activated carbon heats 4~5h at 100~150 DEG C Activated.

Preferably, the roughing sand is made up of 7% iron cement, 93% quartz sand, and described percentage is Mass percent；The binding agent accounts for the roughing sand quality 34%, and the curing agent accounts for the binding agent quality 20%, the lubricant accounts for the binding agent 7%；Also include modified activator, the activator accounts for described Roughing sand quality 16%, the modifying agent is diatomite, the diatomite is immersed in sulfuric acid solution and is activated Treatment.

Preferably, the roughing sand is made up of 10% iron cement, 90% quartz sand, and described percentage is Mass percent；The binding agent accounts for the roughing sand quality 38%, and the curing agent accounts for the binding agent quality 21%, the lubricant accounts for the binding agent 8%；Also include modified activator, the activator accounts for described Roughing sand quality 18%, the modifying agent is bentonite, and 200 mesh are crushed to after the bentonite decontamination treatment, Acidleach activation, then centrifugation are carried out, are then washed, then simultaneously pulverization process is dried after centrifugation to obtain The bentonite of activation.

A kind of preparation method of cast paint, it is characterised in that comprise the following steps：

The first step：The described cast paint of configuration, the iron cement by isometric 2.5mol/L FeCl3 The NaOH solution mixing of solution and 5mol/L, stands after stirring, and is placed in porcelain evaporating dishes 110 20h is heated in DEG C baking oven to obtain；

Second step：Roughing sand, modifying agent are sufficiently mixed stir be put into puddle mixer be heated to 180 DEG C~ 200 DEG C, mixed grind 60s is rinsed up to water outlet is limpid after cooling with distilled water, is dried at being then placed in 110 DEG C Adding binding agent, curing agent and lubricant afterwards be mixed and stirred for uniformly.

The present invention solves defect present in background technology, and cast paint of the invention is by adding activation Modifying agent, makes coating possess preferable adsorptivity, it is ensured that the quality of casting.

Specific embodiment

Presently in connection with embodiment, the present invention is further detailed explanation.

A kind of cast paint, including roughing sand, binding agent, curing agent and lubricant, roughing sand is by 5%~10% Iron cement, 90%~95% quartz sand composition, described percentage is mass percent；Binding agent accounts for roughing sand Quality 30%~40%, curing agent accounts for binding agent quality 18%~22%, and lubricant accounts for binding agent 5%~9%； Also include modified activator, activator accounts for the roughing sand quality 10%~20%.

Roughing sand is made up of 5% iron cement, 95% quartz sand, and described percentage is mass percent； Binding agent accounts for roughing sand quality 32%, and curing agent accounts for binding agent quality 18%, and lubricant accounts for binding agent 6%；Also Including the activator being modified, activator accounts for the roughing sand quality 12%, and modifying agent is activated carbon, by activated carbon 4~5h is heated at 100~150 DEG C to be activated.The activated carbon of activation is added, the suction of coating can be increased Attached property.

Roughing sand is made up of 7% iron cement, 93% quartz sand, and described percentage is mass percent； Binding agent accounts for roughing sand quality 34%, and curing agent accounts for binding agent quality 20%, and lubricant accounts for binding agent 7%；Also wrap Modified activator is included, activator accounts for the roughing sand quality 16%, and modifying agent is diatomite, and diatomite is soaked Activation process is carried out in sulfuric acid solution.The acid-hatching of young eggs can change diatomite aperture, pore-size distribution and structure Become, sulfuric acid does not react with the diatom test with SiO2 as main component, and anti-with Al2O3, Fe2O3 Soluble-salt should be generated, makes that diatomite internal pore structure is more rich, specific surface area is significantly increased, adsorptivity It is improved.

Roughing sand is made up of 10% iron cement, 90% quartz sand, and described percentage is mass percent； Binding agent accounts for roughing sand quality 38%, and curing agent accounts for binding agent quality 21%, and lubricant accounts for binding agent 8%；Also Including the activator being modified, activator accounts for roughing sand quality 18%, and modifying agent is bentonite, bentonite decontamination 200 mesh are crushed to after treatment, acidleach activation, then centrifugation is carried out, are then washed, then be centrifuged point From the bentonite that rear drying and pulverization process must be activated.There are substantial amounts of hole and very big interior table inside bentonite Area, there is very strong physical absorption ability to polarity and nonpolar molecule, in its natural state, bentonitic Inner void is in blocked state, carries out activation process, is greatly improved its adsorptivity.

The first step：The above-mentioned cast paint of configuration, iron cement by isometric 2.5mol/L FeCl3 solution NaOH solution with 5mol/L mixes, and is stood after stirring, and is placed in porcelain evaporating dishes in 110 DEG C of baking ovens Middle heating 20h is obtained；

Claims

1. a kind of cast paint, including roughing sand, binding agent, curing agent and lubricant, it is characterised in that the original Sand is made up of 5%~10% iron cement, 90%~95% quartz sand, and described percentage is quality hundred Divide ratio；The binding agent accounts for the roughing sand quality 30%~40%, and the curing agent accounts for the binding agent quality 18%~22%, the lubricant accounts for the binding agent 5%~9%；Also include modified activator, the work Agent accounts for the roughing sand quality 10%~20%.

2. a kind of cast paint according to claim 1, it is characterised in that the roughing sand is by 5% Iron cement, 95% quartz sand composition, described percentage is mass percent；The binding agent accounts for the original Chiltern amount 32%, the curing agent accounts for the binding agent quality 18%, and the lubricant accounts for the binding agent 6%；Also include modified activator, the activator accounts for the roughing sand quality 12%, and the modifying agent is work Property charcoal, the activated carbon heats 4~5h at 100~150 DEG C and is activated.

3. a kind of cast paint according to claim 1, it is characterised in that：The roughing sand is by 7% Iron cement, 93% quartz sand composition, described percentage is mass percent；The binding agent accounts for the original Chiltern amount 34%, the curing agent accounts for the binding agent quality 20%, and the lubricant accounts for the binding agent 7%；Also include modified activator, the activator accounts for the roughing sand quality 16%, and the modifying agent is silicon Diatomaceous earth, the diatomite is immersed in sulfuric acid solution carries out activation process.

4. a kind of preparation method of cast paint, it is characterised in that comprise the following steps：

The first step：The cast paint as described in any one of Claims 1 to 4 is configured, the iron cement is by isometric 2.5mol/L FeCl3 solution and 5mol/L NaOH solution mixing, after stirring stand, It is placed in porcelain evaporating dishes and 20h acquisitions is heated in 110 DEG C of baking ovens；

Second step：Roughing sand, modifying agent are sufficiently mixed to stir to be put into 180 DEG C~200 are heated in puddle mixer DEG C, mixed grind 60s is rinsed with distilled water after cooling and added after water outlet is limpid, is dried at being then placed in 110 DEG C Entering binding agent, curing agent and lubricant be mixed and stirred for uniformly.