Cold Bend Testing Machine

Controls - 70-C977

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Description
Specifications

The machine consist essentially of hydraulic jack with cylindrical mandrel-stem.

Mounted horizontally within a strong steel frame which also carries two fixe reaction rollers. Two 100 mm dia. rollers are supplied; mandrels and mandrel holders must be ordered separately.

The type of bending required depends on the diameter of the specimen and on the quality and type of steel, as specified in Table II. This table also indicates the diameters required for the bending mandrel and rollers, which can easily be changed for different sizes, and for the roller spacing which is adjustable. Mandrels larger than 96 mm dia. do not need mandrel holders, because they fit directly onto the stem.

Specifications
Power	750W
Dimensions	1500 x 66 5x 1050 mm
Weight approx.	Net 210 kg

Applications

Used for bending and staightening steel reinforcing bars. Two types of test can be performed depending upon size and quality of specimens: 1) Bending the specimen through 90° and than straightening it again; 2) Bending through 180°.

Standards

ASTM A 615-89, ASTM A 615M-89,
Law N° 1086 March 1992

Cat. No.	Description
Mandrels	Standards
Table I	Italian	ASTM
	for rounds de diamètre 5 to 32	for rounds de diamètre 9.52 to 35.81
70-C977/15	20 mm	--
70-C977/16	24 mm	--
70-C977/19	32 mm	32 mm
70-C977/21	40 mm	40 mm
70-C977/23	--	44 mm
70-C977/24	48 mm	--
70-C977/27	--	56 mm
70-C977/33	--	96 mm
70-C977/37	112 mm	112 mm
70-C977/38	--	125 mm
70-C977/39	128 mm	128 mm
70-C977/42	144 mm	--
70-C977/47	200 mm	200 mm
70-C977/48	220 mm	--
70-C977/49	--	224 mm
70-C977/50	250 mm	250 mm
70-C977/55	336 mm	--
70-C977/56	384 mm	--
70-C977/57	--	210 mm
Important Note: over 96 mm dia., the mandrels are directly connected to the jack-stem.

MANDRELS Table II
Specimen dia.	Mandrel dia.	Roller dia.	Distance between rollers
	deformed surface		deformed surface
	FeD 44K		FeB 44K
5 mm	20 mm	50 mm	35 mm
6 mm	24 mm	50 mm	42 mm
8 mm	32 mm	50 mm	56 mm
10 mm	40 mm	50 mm	70 mm
12 mm	48 mm	100 mm	84 mm
14 mm	112 mm	100 mm	154 mm
16 mm	128 mm	100 mm	176 mm
18 mm	144 mm	100 mm	198 mm
20 mm	200 mm	100 mm	260 mm
22 mm	220 mm	100 mm	286 mm
25 mm	250 mm	100 mm	325 mm
28 mm	336 mm	100 mm	420 mm
32 mm	384 mm	100 mm	480 mm
Note: The specimens marked in red must be bent to 180°, while those marked in blue must be bent to 90° then straightened for minimum 20°. ASTM specifications require 100 mm dia. rollers only and the straightening test is not required.

Cat. No.	Description
70-C977	Cold bend testing machine 12 t cap.; 220V, 50 Hz, 1 ph.
70-C977/Z	Cold bend testing machiine 12 t cap.; 110V, 60Hz, 1 ph.
Accessories
Mandrels	All available mandrels are listed in Table I
70-C977/60	Mandrel holder for mandrels to 20 mm dia.
70-C977/61	Mandrel holder for mandrels from 24 to 50 mm dia.
70-C977/62	Mandrel holder for mandrels from 54 to 96 mm dia.
70-C977/K1	Recommended set of spares comprising jack sealing, switch, pilot lamp and pressure gauge 0-16 tons cap.
70-C977/R22	100 mm dia. roller