Manufacturing of forgings under drawings of the customer

The Society with limited liability "Аратта" is engaged in manufacture and sale steel forgings. In table 1 the configurations of forgings are represented.

Table 1. (GOST 7062-90)

№	Forging's type	Forging's sketch	Parity of sizes	Table's numbers of allowances and admissions
1	Smooth round and rectangular section		L > 1,2D L ? 30D	2
2			2H ? B ? H 30H ? L ? 1.5B	3
3	Round section with ledges		l1 ? 0,3D1 ht12 ? 12мм	2,4,5
4
5	Round section with dredging		h1,2 ? 12мм	2,4,5,6,7
6	Round section with		l1 ? 0,3D1 h12 ? 12мм	2,4,5,7
7	Round section with a flange		l1 ? 0,3D1 h ? 12мм	2,4,5,7
8	Square section with ledges of the same types, as for round section		B0 = H0 B1 = H1	3,4,5
9	Round section with a cone		h > 24мм. l ? 2D2	2,4,5
10	Cylinders		H ? 1,2D H ? 0,5D	8
11	Disks without an aperture and with an aperture		H < 0,5D H ? 0,2D d < 0,5D	8,9
12	Муфты		H ? 0,5D H ? 1,2D d < 0,5D	8,9
13	Bars and plates without an aperture and with an aperture		B ? 2H B ? 4H L ? B d < 0,5B L ? 8H	9,11
14	Cylinders with apertures		L > 1,2D L ? 6D d ? 0,5D	12,13
15	Rings rolled		H ? 1,2D H ? 0,2D d ? 0,5D	14

Table 2. (GOST 8479-70)

Group of forging	Kinds of tests	Conditions of acquisition of party	Quantity of forging from a party due for test	Delivery characteristics
I	Without tests	Forgings of one mark of steel	-	-
II	Definition of hardness	Forgings of one mark of steel together lasted the thermal processing	5% from a party, but not less then 5 pieces	Hardness
III	Definition of hardness	Forgings of one mark of steel lasted the thermal processing on an identical mode	100%	Hardness
IV	1. Test for a stretching 2. Definition of impact strength 3. Definition of hardness	Forgings of one swimming trunks which have been together in thermal processing	Up to 100 - 2 pieces, more then 100 pieces - 1 %, but not less then 2 pieces. (forgings with top and bottom limits of hardness) Hardness - 100 %	The Limit of fluidity Relative narrowing Impact strength -
V	1. Test for a stretching 2. Definition of impact strength 3. Definition of hardness	Is accepted individually everyone forging	100%	The Limit of fluidity Relative narrowing Impact strength -

Note:

1. Values of hardness for forgings of groups IV and V are not a rejection attribute.
2. For forgings of VI group it is resolved to make definition of mechanical properties on forgings not with the bottom and top limits of hardness, and with norms of the hardness, being within the limits of the set categories of durability. In this case hardness is an additional delivery characteristic.
3. The customer has the right to appoint other combinations of delivery characteristics for forgings of IV and V groups instead of established in table 1.
4. It is reserved to make the definition of hardness of forgings of V groups on samples for mechanical tests

Also we can offer forgings with preliminary machining.

The term of manufacturing - 20-30 working days (depending on volume and complexity of the order).