Technological Process

TECHNOLOGICAL PROCESS

Jihua aluminum products. Strictly organize and implement production in accordance with national standards or industry standards. Such as anodized aluminium profiles and standard aluminium profiles. Take the road of standardized production, and improve market competition

Product Quality Standard

Chemical Components of Aluminium Alloy Profile

Alloy grade	Si	Mg	Fe	Cu	Mn	Zn	Cr	Ti	Other impurities		Al
Alloy grade	Si	Mg	Fe	Cu	Mn	Zn	Cr	Ti	Single	Total	Al
6061	0.40-0.80	0.8-1.2		0.15-0.40			0.04-0.35				Allowance
6063	0.20-0.60	0.45-0.9									Allowance
6063A	0.30-0.60	0.6-0.9	0.15-0.35								Allowance

Mechanical Properties of Aluminium Alloy Profile at Room Temperature

Alloy grade	Status	Longitudinal tensile test results at room temperature			Hardness
Alloy grade	Status	Tensile strength(N/mm2)	Specified non-proportional extension strength(N/mm2)	Elongation after break(%)	Thickness of test sample(mm)	Vickers hardness(HV)	Webster hardness(HW)
6061	T4	≥180	≥110	≥16	-	-	-
6061	T6	≥265	≥245	≥8	-	-	-
6063	T5	≥160	≥110	≥8	≥0.8	≥58	≥8
6063	T6	≥205	≥180	≥8	-	-	-
6063A	T5	≥200	≥160	≥5	≥0.8	≥65	≥10
6063A	T6	≥230	≥190	≥5

Surface Film Standard for Anodized Aluminium Alloy Profile

Grade of film thickness	Average film thickness(μm)	Local film thickness(μm)	Sealing quality(mg/dm2)	Wear resistance coefficient(g/μm)
AA10	≥10	≥8	≤30	Drop sand test≥300
AA15	≥15	≥12
AA20	≥20	≥16
AA25	≥25	≥20
Note: The film thickness grade shall be indicated in the purchase order (or contract) and is generally supplied according to AA10 (door and window) or AA15 (curtain wall).

Surface Film Standard for Electrophoretic Coating Aluminium Alloy Profile

Grade of film thickness	Local thickness of anodic oxide film(μm)	Local thickness of coating film(μm)	Local thickness of composite film(μm)	Coating film hardness	Wear resistance shakeout amount/g
A	≥9	≥12	≥21	Pencil test≥3H	Drop sand test≥3300
B	≥9	≥7	≥16	Pencil test≥3H	Drop sand test≥3300
Note: The film thickness grade shall be indicated in the purchase order (or contract) and is generally supplied according to grade B.

Surface Film Standard for Fluorocarbon Paint Spraying Aluminium Alloy Profile

Type of film layer	Average film thickness(μm)	Local film thickness(μm)	Color	Adhesion	Hardness
Two coating	≥30	≥25	Gloss:±5 Color difference: basically consistent with the confirmed sample of both parties	Dry type, wet type, boiling water The adhesive force shall reach grade 0	Pencil test of coating≥1H
three coating	≥40	≥34
four coating	≥65	≥55
Note: Due to the complexity of the cross-sectional shape of the profile, the local film thickness on certain surfaces of the profile (such as the inside corner, groove, etc.) is allowed to be lower than the specified value in the table, the base exposure is not allowed; for coating of non-decorative surfaces, if required, it shall be listed in the contract or order.

Surface Film Standard for Power Spraying Aluminium Alloy Profile

Film thickness(μm)	60°Gloss value	Adhesion	Color	Indentation hardness	Wear resistance(L/μm)
≥40，Implement in accordance with international standards and produce according to the contract	3~30±5	Dry type, wet type, boiling water The adhesion shall reach Grade 0	Basically consistent with the confirmed sample of both parties	Indentation resistance≥80	Drop sand test, wear coefficient≥0.8
	31~70±7
	71~100±10
Note: Due to the complexity of the cross-sectional shape of the profile, the film thickness on certain surfaces of the profile (such as the inside corner, groove, etc.) is allowed to be lower than the specified value in the table. For coating of non-decorative surfaces, if required, it shall be listed in the contract or order.

Mechanical Properties of Aluminium Alloy Profile at Room Temperature

Test items	Connecting mode	Longitudinal shear characteristic value(N/mm)			Transverse tensile characteristic value(N/mm)			Average value of deformation of insulation material(mm)
Test items	Connecting mode	Room temperature	Low temperature	High temperature	Room temperature	Low temperature	High temperature	Average value of deformation of insulation material(mm)
Longitudinal shear/ transverse tensile properties	Strip inserting type	≥24			≥24	-	-	-
Longitudinal shear/ transverse tensile properties	Pouring type	≥24			≥24			-
60 times thermal cycle test at high temperature constant load	Strip inserting type	-	-	-	-	≥24		≤0.6
	Pouring type	≥24	-	-	-	-	-	≤0.6

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