Vruća prodaja vatrostalne mase za prskanje

Masa za prskanje je vrsta vatrostalnog materijala koji ovisi o pneumatskim alatima za konstrukciju prskanja. Uglavnom se koristi za nove vatrostalne obloge komponenti i popravak oštećenih obloga. Može se podijeliti na svjetlo, polusvijetla, teški materijali za gađanje, i alkalni materijali za krpanje prema korištenim sirovinama i ulozi uporabe. Ima karakteristike prikladne konstrukcije, visoka radna učinkovitost, ušteda rada, i tako dalje.

Što je vatrostalni premaz sprejom?

Sastav materijala vatrostalnog premaza prskanjem sličan je sastavu vatrostalnih lijevaka iste vrste, osim što je kritična veličina čestica vatrostalnog agregata manja, općenito 3-5 mm. Izrađuje se prskanjem. Kombinirana količina vatrostalnog praha, ultrafini prah, a vezivo je relativno veliko, općenito 35~45%.

Tehnički parametar vruće mase za raspršivanje

Artikal		Lagano ili polusvjetlo			Teška			lužina
		QP-0.8	QP-1.3	QP-1.8	ZP-40	ZP-50	ZP-60	MP	MGP
Al2O3 %		≥30	≥40	≥45	≥40	≥50	≥58	/	/
MgO %		/	/	/	/	/	/	≥80	60~70
CaO %		/	/	/	/	/	/	/	20~40
Nasipna gustoća g/cm3 110℃×24h		≤0,8	≤1,3	≤1,8	≥2,0	≥2,1	≥2,3	1.8~2.1	1.8~2,0
Čvrstoća hladnog drobljenja MPa	110℃×24h	≥4	≥7	≥15	≥25	≥35	≥35	≥5	≥5
	Temp × 3h	≥3 800	≥5 1200	≥13 1300	≥25 1000	≥30 1000	≥30 1000	≥10 1500	≥8 1500
Stopa trajne linearne promjene %		±0,8 800	±0,8 1200	±0,8 1300	±0,5 1000	±0,5 1000	±0,5 1000	-0.5~1,0 1500	-0.5~1,0 1500
Toplinska vodljivost W/(m·K)  350±25 ℃		≤0,21	≤0,35	≤0,70	/	/	/	/	/

Prednosti vatrostalne raspršene mase

1. Jednostavna konstrukcija
2. Izvrsno prianjanje
3. Izvrsna cjelovitost
4. Raznovrsni izbor materijala
5. Izvrsna izvedba
6. Pogodan za brzi popravak
7. Zaštita okoliša i ušteda energije
8. Smanjite troškove održavanja

Klasifikacija premaza prskanjem

(1) Teški vatrostalni premaz prskanjem

Nasipna gustoća teškog vatrostalnog premaza raspršivanjem općenito je veća od 1,8 g/cm3. Vatrostalni agregat i prah općenito su izrađeni od aluminijskih silikatnih materijala, s kritičnom veličinom čestica od 5 ili 10 mm. Sastav čestica je: 3~5 mm je otprilike 30%, 1~3 mm je otprilike 30%; manje od 1 mm je otprilike 40%. Vezivo je od aluminatnog cementnog vodenog stakla, itd., plus primjese. Obično se izrađuje polusuhom ili pseudosuhom metodom.

(2) Lagani vatrostalni premazi u spreju

Postoje mnoge vrste lakih vatrostalnih premaza sprejom, uglavnom gline, keramzit, i perlitne vatrostalne prevlake u spreju. Lagani vatrostalni premazi u spreju uglavnom se koriste za toplinski izolacijski sloj peći, a može se koristiti i za radni sloj cjevastih peći za grijanje, dimnjak,s, i dimnjaci.
Kritična veličina čestica vatrostalnih agregata za lake vatrostalne premaze sprejom je 5 mm. Razvrstavanje čestica je: 35mm je oko 19%-30%; 0.6-3mm je oko 8%-14%; 0.088-0.60mm je oko 30%-40%, a manje od 0,088 mm je otprilike 25%-35%.

Upoznavanje s načinom izrade vatrostalne mase za prskanje

Prskanje plamenom

Ova metoda koristi kisik za transport miješanog vatrostalnog raspršenog sloja do mlaznice i raspršivanje zajedno sa zapaljivim plinom. Zapaljivi plin se spaljuje, materijal se kreće u plamenu i tali u plastično stanje, i raspršuje se na površinu za prskanje. Ova se metoda uglavnom koristi za toplinsko raspršivanje obloga peći, s malim oštećenjem izvorne obloge, lako sinteriranje raspršenog sloja, i dug radni vijek, ali trošak je visok. Osim toga, nakon topljenja ili polutopljenja plazma pištoljem, spraying the refractory mixture onto the spraying surface and spraying the slag with appropriately adjusted furnace composition onto the lining (i.e., slag splashing method) also belong to this type of method.

Dry spraying

Dry spraying refers to spraying mixed refractory spray coating directly onto the spraying surface through a nozzle and is mainly used for furnace repair.

Wet spraying

This method refers to spraying the refractory coating on the spraying surface after adding water or liquid binder. According to the order and amount of water or liquid binder, it can be divided into four methods: mud method, wet method, semi-dry method, and pseudo method. Među njima, the mixed-use of each two methods is called a mixed method. The mud method is to mix the refractory mixture into mud before spraying, which is mainly used for thermal spraying to repair furnace linings; the wet method is to mix the refractory mixture into pumping mud and then spray it; the semi-dry method is to mix the refractory mixture with a small amount of water, wet it evenly, and then send it to the nozzle, and then add the remaining water before spraying; the pseudo-dry method is to mix the refractory mixture through a mixer, add water and send it to the nozzle for spraying. The latter three methods are suitable for spraying furnace construction or spraying furnace linings.

Common types of refractory spraying mass

Silica refractory spray coating: silicate as the main component, adding the appropriate amount of binder and filler. It has good high-temperature resistance, otpornost na koroziju, and wear resistance, suitable for high-temperature environments such as metallurgy, chemical industry, and construction.

High-alumina refractory spray coating: It is mainly composed of high-purity alumina, with binders and fillers added. It has excellent high-temperature resistance and corrosion resistance and is suitable for high-temperature equipment such as steelmaking and aluminum electrolytic cells.

Magnesium refractory spray coating: magnesium salt is the main component, with added binders and fillers. It is lightweight, has high-temperature strength, and thermal shock resistance, and is suitable for high-temperature industrial furnaces such as glass kilns and ceramic kilns.

Silicon carbide refractory spray coating: Silicon carbide is the main component, with binders, antioxidants, itd. It has good high-temperature resistance, otpornost na koroziju, and thermal conductivity, and is suitable for large industrial furnaces in the foundry and electronics industries.

Refractory ceramic coating: It is mainly composed of ceramic particles and special binders. It has excellent fire resistance, otpornost na koroziju, and wear resistance, and is suitable for railways, building fire protection,n and other fields.

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