Slurry Pump Parts-Metal Liner

There are many factors involved in the wear of slurry pumps’ wet parts (impeller, volute liner, throat bush and frame plate liner insert). In general, they can be classified into three categories.

1. Erosion wear. The solid particles carried in the liquid impact the surface of the wet parts at a certain speed, causing material loss.
2. Cavitation damage. For some reason, when the absolute pressure of the liquid pumped drops to the vaporization pressure at the current temperature, the liquid begins to vaporize, generating steam and forming bubbles. These bubbles will have a strong impact on the metal surface. The metal surface is exfoliated due to fatigue.

3.Abrasion. When the medium conveyed has a certain pH, the slurry pump wet parts will also undergo corrosion and wear, that is, the loss of materials under the combined action of corrosion and wear

The metal liner means the wet parts of the pumps are made of metal. For different wear applications, we recommend different materials such as A05, A07, A49, A61, etc. The metal liner parts of the slurry pump can be completely interchanged with the rubber liner or ceramic so that the users do not change the whole pumps.

Material Performance

Material Type	Code	Description	(MPa)	ak(J/cm2)	Material HRC	Special Performance	Application
Abrasion resistant white iron	A05	KmTBCr26	≥700	6-10	≥56	Anti-erosion performance <A07 with certain corrosion resistance	For higher wear condition 5-12 of PH
Abrasion resistant white iron	A07	KmTBCr15Mo	≥550	4-8	≥59	Best anti-erosion performance, corrosion resistance <A04, A05	For higher wear condition
Abrasion resistant white iron	A01	KmTBCr8	≥550	6-8	≥55	Anti-erision performance≈90% of A05	For mud pump
Abrasion resistant white iron	A11	KmTBCrMnMo	≥400	3-6	38-42	Low-grade anti-erosion performance, low hardness, drilling tapping	For microscale fine partical & low-grade abrasion working conditions
Anti-wear & anti-corrosive iron	A49		≥600		43-49	Abtu-erosion performance, corrosion stability, in low ph environment, abrasion resistance≈A03	For low-grade PH corrosive environment, expecially suitable fro FGD(PH≥4), Usually used for low acid enviroment
Anti-wear & anti-corrosive iron	A33				35	Anti-erosion performance≈A03 corrosion resistance	To transport oxidability slurry of PH valve≥1, such as phosphogypsum, HN03, H2SO4, H3PO4, etc.
	A22		1200		45	Excellent erosion resistance, higher hardness	For dredging pump casing
Anti-wear cast steel	A23		700		HB 500-600	Higher hardness and anti-erode	To transport higher anti-wear & anti-corrosive working condition, such as parts of dredging pump, clean water pump, sewage pump, certain parts of slurry pump
Anti-wear cast steel	A25				HB 300-350	Low hardness, higher abrasion resistance, good weldable performance	For light ecrode and wear condition such as transporting aqueous medium of small gravel

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