Technical Info

DIES Info

We have brought together the die theory, manufacturing specifications, and arrangement standards of D&S DIES in one place. From the structure and design conditions of each part of the Dies, to standard manufacturing specifications by application, special stainless specifications, and the arrangement charts for copper wire (fine · medium · thick) and stainless — precision data ready for immediate use on site.

Dies Structure and Names of Each Part

APPROACHGuides and directs the material
BEARINGDetermines the final SIZE; sets the time and condition under which plastic deformation occurs
EXITMaterial exit section

ENTRANCE(Mouth)Keeps the incoming material centered and facilitates supply of lubricant (drawing) oil.
REDUCTIONThe section where the material is reduced; disperses pressure
BACK RELIFEMinimizes scratching and stress on the material and suppresses the elastic effect.

Design Conditions of Dies

01
Base wire SIZE
02
Determination of REDUCTION angle
03
Assessment of drawing machine performance (speed, etc.)
04
Characteristics of the drawing oil

Natural Diamond Drawing Dies [DS031020 - 002 TYPE]

Casing cross-section drawing — Stainless steel casing, One-piece mounting, DIAMOND Flattening, Entrance ring

REMARK
A : 25±0.1mm
B : 8 ~ 12±0.2mm
C : +0, 0.001 ~ 3mm
D : 16 ~ 18° (Copper)

Standard Manufacturing Specifications for Dies

Standard Manufacturing Specifications for Dies
Application	Target	Mouth	Approach	Reduction		Bearing	Back	Exit
Application	Target	Mouth	Approach	Angle	Length	Bearing	Back	Exit
Steel wire	Stainless wire, welding rod, tire cord wire	50~70°	35±5°	12~14°	0.1d or more	30~50%	0.1d or more	50~80°
Stranded wire	Copper wire	60~80°	35±50°	16~18°	0.8d or more	20~40%	0.1d or more	50~80°
Skin pass	Copper-clad steel wire	60~80°	20±50°	10~12°	0.8d or more	40~60%	0.1d or more	50~80°
Tin plating	Copper wire (plating)	60~80°	40±5°	20~22°	0.5d or more	10~20%	0.1d or more	50~80°
Multi	Copper wire	60~80°	40±5°	20~22°	0.8d or more	20~30%	0.1d or more	50~80°
Bunching	Copper wire	60~80°	40±5°	20~22°	0.8d or more	20~30%	0.1d or more	50~80°
Pipe	Copper pipe	60~80°	40±5°	28~30°	0.8d or more	20~30%	Not required	50~80°
Brass	Brass wire	60~80°	35±5°	14~16°	0.8d or more	20~40%	0.1d or more	50~80°

Special Manufacturing Specifications

01) Stainless 1

Special Manufacturing Specifications — Stainless 1
Inspection Item		For Copper Wire		For Aluminum PCD (for vtc)	Stainless 1
Inspection Item		ND	PCD	For Aluminum PCD (for vtc)	ND	PCD	For Spring
Entrance	Angle (°)	70±5	70±5	70±5	60±5	60±5	60±5
Entrance	Length (d,%)	30~40	30~40	30~40	20~30	20~30	20~30
Approach	Angle (°)	20~30	20~34	18~25	18~30	18~30	18~30
Approach	Length (d,%)	40~50	40~50	50~60	40~60	40~60	40~60
Reduction	Angle (°)	14~18	14~18	12~16	12~16	12~16	10~12
Reduction	Length (d,%)	30~40	30~40	40~50	50~70	50~70	50~70
Bearing	Length (d,%)	20~40	20~40	20~30	20~50	20~50	30~40
Back Relief	Angle (°)	20±5	20±5	10~15	14~18	14~18	14~18
Back Relief	Length (d,%)	10~20	10~20	10~20	10~20	10~20	10~20
Exit	Angle (°)	60±5	60±5	50±5	50±5	50±5	50±5
Exit	Length (d,%)	20~30	20~30	20~30	20~30	20~30	20~30
Case Spec	(d * t)㎟	25*8	25*12	25*12	25*8	25*12	25*8
Case Taper	Front (㎟)	8	10	10	8	10	8
Case Taper	Rear (㎟)	7	9	9	7	9	7
Standard Tolerance	(+) Tolerance (㎟)	0.0005	0.0005	0.0005	0.001~2	0.001~3	0
Standard Tolerance	(-) Tolerance (㎟)	0.001	0.0015	0.0015	0	0	0.001~3
Inspection 1	Bore surface shall be in good condition	Visual / microscope inspection
Inspection 2	Size	Full inspection (conoptica)
Inspection 3	Die shape	Sampling 5% (conoptica)
Remarks		Visual inspection criteria: roundness / surface condition / bubbles / ring / reduction curvature / foreign matter

02) Stainless 2, 3

Special Manufacturing Specifications — Stainless 2, 3
Inspection Item		Stainless 2				Stainless 3
Inspection Item		5010	5015/5025	5035	5853	5010	5025	5010	5025
Entrance	Angle (°)	60±5	60±5	60±5	60±5	60±5	60±5	60±5	60±5
Entrance	Length (d,%)	20~30	20~30	20~30	20~30	20~30	20~30	20~30	20~30
Approach	Angle (°)	18~30	18~30	18~30	18~30	18~30	18~30	20~30	20~30
Approach	Length (d,%)	40~60	40~60	40~60	40~60	30~50	30~50	30~50	30~50
Reduction	Angle (°)	10~12	10~12	13~15	15~17	12±2	12±2	10±2	10±2
Reduction	Length (d,%)	50~70	50~70	50~70	50~70	30~50	30~50	30~50	30~50
Bearing	Length (d,%)	30~40	30~40	30~40	30~40	20~50	20~50	20~50	30~40
Back Relief	Angle (°)	14~18	14~18	14~18	14~18	14~18	14~18	14~18	14~18
Back Relief	Length (d,%)	10~20	10~20	10~20	10~20	10~20	10~20	10~20	10~20
Exit	Angle (°)	50±5	50±5	50±5	50±5	50±5	50±5	50±5	50±5
Exit	Length (d,%)	10~20	10~20	10~20	10~20	10~20	10~20	10~20	10~20
Case Spec	(d * t)㎟	25*10	25*12	25*15	42*24	25*8	25*12	25*8	25*12
Case Taper	Front (㎟)	8	10	13	16	8	10	8	10
Case Taper	Rear (㎟)	7	9	12	15	7	9	7	9
Standard Tolerance	(+) Tolerance (㎟)	0.000	0.000	0.000	0.000	0.0010	0.0010	0.0010	0.0010
Standard Tolerance	(-) Tolerance (㎟)	0.001~3	0.005~7	0.007~0.010	0.01~0.015	0.0010	0.0015	0.0010	0.0015
Inspection 1	Bore surface shall be in good condition	Visual / microscope inspection
Inspection 2	Size	Full inspection (conoptica)
Inspection 3	Die shape	Sampling 5% (conoptica)
Remarks		Under 1.5㎟ RD angle 10~12	1.5~2.3㎟ RD angle 13~15	2.3㎟ or more RD angle 15~17		Visual inspection criteria: roundness / surface condition / bubbles / ring / reduction curvature / foreign matter

Die Arrangement Chart (Copper Wire) - Fine Wire

Die Arrangement Chart, Copper Wire, Fine Wire
Base wire dia.	0.50	0.40	0.32	0.32	0.29	0.26	0.20
Finished wire dia.	0.12	0.10	0.09	0.08	0.07	0.06	0.05
PAT(%)	94.20%	93.80%	92.00%	93.80%	94.20%	95.70%	93.70%
4	0.4000	0.3430	0.2930	0.2710	0.2320	0.1990	0.1660
5	0.3700	0.3170	0.2710	0.0251	0.2150	0.1840	0.1540
6	0.3430	0.2930	0.0251	0.2320	0.1990	0.1700	0.1430
7	0.3170	0.2710	0.2320	0.2320	0.1840	0.1570	0.1320
8	0.2930	0.2510	0.2150	0.1990	0.1700	0.1450	0.1220
9	0.2710	0.2320	0.1990	0.1840	0.1570	0.1340	0.1130
10	0.2510	0.2150	0.1840	0.1700	0.1450	0.1240	0.1050
11	0.2320	0.1990	0.1700	0.1570	0.1340	0.1150	0.0970
12	0.2150	0.1840	0.1580	0.1450	0.1240	0.1070	0.0900
13	0.1990	0.1700	0.1470	0.1340	0.1150	0.0995	0.0835
14	0.1840	0.1570	0.1370	0.1240	0.1070	0.0925	0.0775
15	0.1700	0.1460	0.1270	0.1150	0.0995	0.0860	0.0720
16	0.1580	0.1340	0.1180	0.1070	0.0925	0.0800	0.0670
17	0.1470	0.1240	0.1100	0.0995	0.8600	0.0745	0.0620
18	0.1370	0.1150	0.1020	0.0925	0.0800	0.0690	0.0575
19	0.1270	0.1070	0.0950	0.0860	0.0745	0.0640	0.0535
20	0.1200	0.1000	0.0900	0.0800	0.0700	0.0600	0.0500

Die Arrangement Chart (Copper Wire) - Medium Wire

Die Arrangement Chart, Copper Wire, Medium Wire
Base wire dia.	2.0	2.3	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6
Finished wire dia.	0.32	0.335	0.41	0.51	0.61	0.61	0.66	0.71	0.81	0.91	1.01	1.21	1.51	1.61
PAT(%)	97.44	97.61	97.51	96.15	94.51	94.50	93.56	92.54	90.30	87.75	84.90	78.30	66.27	61.68
1
2	1.800	2.300	2.300
3	1.600	1.800	2,030
4	1.430	1.600	1.800	2.030
5	1.270	1.430	1.600	2.030	2.300
6	1.130	1.270	1.430	1.800	2.050	2.300	2.300
7	1.010	1.130	1.240	1.600	1.830	2.020	2.050	2.300
8	0.900	1.010	1.130	1.430	1.630	1.780	1.830	2.030	2.300
9	0.800	0.900	1.010	1.270	1.460	1.570	1.630	1.800	2.030	2.300
10	0.710	0.800	0.900	1.130	1.300	1.380	1.450	1.600	1.800	2.030	2.300
11	0.630	0.710	0.800	1.010	1.160	1.220	1.290	1.430	1.600	1.800	2.030	2.300
12	0.560	0.630	0.710	0.900	1.040	1.080	1.150	1.270	1.430	1.600	1.800	2.050
13	0.500	0.560	0.630	0.800	0.930	1.950	1.020	1.130	1.270	1.430	1.600	1.800	2.050
14	0.445	0.500	0.560	0.710	0.830	0.840	0.910	1.000	1.130	1.270	1.430	1.650	2.070	2.300
15	0.400	0.450	0.4500	0.630	0.740	0.750	0.810	0.890	0.010	1.130	1.270	1.480	1.850	2.020
16	0.335	0.400	0.445	0.560	0.660	0.670	0.720	0.790	0.900	1.100	1.120	1.320	1.650	1.800
17	0.320	0.335	0.410	0.510	0.610	0.610	0.660	0.710	0.810	0.910	1.010	1.210	1.510	1.600

Die Arrangement Chart (Copper Wire) - Thick Wire

Die Arrangement Chart, Copper Wire, Thick Wire
Base wire dia.	8.0	8.0	8.0	8.0	8.0	8.0
Finished wire dia.	1.6	1.8	2.0	2.3	2.3	2.6
PAT(%)	96.00	94.93	93.75	91.73	91.73	89.43
1	7.10	7.58
2	5.83	6.23	7.10
3	4.84	5.12	5.83	6.88	7.10
4	4.00	4.25	4.84	5.66	5.83	6.60
5	3.42	3.67	4.20	4.84	4.84	5.61
6	2.94	3.20	3.67	4.20	4.20	4.84
7	2.54	2.81	3.20	3.65	3.65	4.20
8	2.23	2.48	2.81	3.20	3.20	3.67
9	1.96	2.21	2.48	2.81	2.81	3.20
10	1.74	1.96	2.18	2.48	2.48	2.81
11	1.60	1.80	2.00	2.30	2.30	2.60

Stainless Arrangement Chart

Shaded cells (value followed by parentheses = case size) mark the start of each series.

Stainless Arrangement Chart
0.122(0.5)	0.160(0.8)	0.0270	0.300(1.0)	1.300	1.090	0.960	0.920
0.122	0.160	0.295	0.320	0.630(1.3)	1.190	1.047	0.370(1.0)
0.130	0.171	0.325	0.350	0.630	1.300	1.160	0.400
0.140	0.185	0.355	0.385	0.670	0.635(1.3)	1.300	0.430
0.152	0.200	0.382	0.420	0.720	0.635	0.185(0.8)	0.470
0.165	0.220	0.413	0.460	0.775	0.680	0.200	0.510
0.181	0.240	0.450	0.500	0.850	0.745	0.220	0.550
0.195	0.265	0.490	0.550	0.920	0.810	0.240	6.000
0.215	0.290	0.530	0.600	1.000	0.880	0.260	0.660
0.235	0.320	0.580	0.660	1.090	0.960	0.280	0.715
0.275	0.385	0.685	0.775	1.300	1.160	0.330	0.850
0.300	0.420	0.745	0.850	0.500(1.3)	1.300	0.360	0.920
0.330	0.460	0.200(0.8)	0.920	0.500	0.380(1.0)	0.390	1.000
0.360	0.500	0.215	1.000	0.540	0.380	0.420	0.225(0.8)
0.390	0.550	0.235	0.250(1.0)	0.584	0.410	0.460	0.225
0.420	0.600	0.255	0.250	0.640	0.450	0.500	0.240
0.460	0.660	0.275	0.270	0.700	0.490	0.550	0.260
0.500	0.715	0.300	0.295	0.770	0.540	0.600	0.280
0.140(0.8)	0.800	0.330	0.320	0.850	0.590	0.660	0.305
0.140	0.170(0.8)	0.360	0.350	0.920	0.650	0.715	0.330
0.152	1.181	0.390	0.385	1.000	0.715	0.800	0.360
0.165	0.195	0.420	0.420	1.090	0.775	0.500(1.3)	0.390
0.181	0.215	0.460	0.460	1.190	0.850	0.500	0.420
0.195	0.235	0.500	0.500	1.300	0.920	0.540	0.460
0.215	0.255	0.550	0.550	0.700(1.4)	1.000	0.584	0.500
0.235	0.275	0.600	0.600	0.700	0.560(1.3)	0.635	0.550
0.255	0.300	0.660	0.660	0.750	0.600	0.685	0.660
0.300	0.360	0.220(0.8)	0.775	0.880	0.715	0.810	0.715
0.330	0.390	0.235	0.850	0.960	0.775	0.880	0.800
0.360	0.420	0.255	0.920	1.047	0.850	0.960	0.240(0.8)
0.390	0.460	0.275	1.000	1.143	0.920	1.047	0.240
0.420	0.500	0.300	0.400(1.3)	1.250	1.000	1.160	0.255
0.460	0.550	0.330	0.430	1.400	1.090	1.300	0.275
0.500	0.600	0.360	0.470	0.600(1.3)	1.190	0.290(0.8)	0.300
0.550	0.660	0.390	0.510	0.600	1.300	0.290	0.330
0.600	0.715	0.420	0.550	0.650	0.280(1.0)	0.310	0.360
0.660	0.800	0.460	0.600	0.710	0.300	0.340	0.390
0.175	0.180(0.8)	0.500	0.660	0.775	0.325	0.370	0.420
0.150(0.8)	0.195	0.550	0.715	0.850	0.55	0.400	0.460
0.150	0.215	0.600	0.775	0.920	0.385	0.430	0.500
0.160	0.235	0.660	0.850	1.000	0.420	0.470	0.550
0.171	0.255	0.715	0.920	1.090	0.460	0.510	0.600
0.185	0.275	0.800	1.000	1.190	0.500	0.550	0.660
0.200	0.300	0.230(0.8)	1.090	1.300	0.550	0.600	0.715
0.220	0.330	0.245	0.190	0.750(1.4)	0.600	0.660	0.800
0.240	0.360	0.265	1.300	0.750	0.660	0.715
0.265	0.390	0.290	0.450(1.3)	0.810	0.715	0.800
0.290	0.420	0.320	0.450	0.880	0.775	0.350(1.0)
0.320	0.460	0.350	0.485	0.960	0.850	0.350
0.350	0.500	0.385	0.530	1.047	0.920	0.375
0.385	0.550	0.420	0.584	1.143	1.000	0.410
0.420	0.600	0.460	0.640	1.250	0.550(1.3)	0.450
0.500	0.715	0.550	0.775	0.710(1.3)	0.810	0.715
0.550	0.800	0.600	0.850	0.715	0.635	0.590
0.600	0.190(0.8)	0.660	0.920	0.775	0.685	0.650
0.660	0.205	0.715	1.000	0.850	0.745	0.715
0.715	0.225	0.800	1.090	0.920	0.810	0.775
0.800	0.245		1.190	1.000	0.880	0.850