JB/T 50077-1999 Material selection and heat treatment of eight types of machine tool parts
Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T50077—1999
Material Selection and Heat Treatment of Eight Types of Machine Tool Parts
(Internal Use)
1999-06-09 Issued
National Machinery Industry Bureau
2000-01-01 Implementation
This standard is revised according to the requirements of the standard 50077-1999, and the main technical content remains unchanged. This standard is implemented from JD/T50077-96. This standard was proposed by the National Technical Committee for Standardization of Cutting Machine Tools. The unit of this standard is: Beijing Machinery Research Institute. This standard was issued in 1996.
1 Scope
China Machinery Industry Standard
Material Selection and Heat Treatment of Eight Types of Machine Tool Parts
(Internal Use)
JB/50077-1999
Code J15:Xr7—9h
This standard specifies the common materials and heat treatment requirements for eight types of parts (guides, guides, guides, inner wheels, chain shafts, racks and housings) of metal cutting machines (hereinafter referred to as machine tools). This standard applies to the following:
2 Referenced Standards
The following provisions are included in the standards: The provisions that are referenced in this standard constitute the provisions of the standards. When this standard is published, the versions shown are valid. All standards may be revised. When using this standard, the latest versions of the following standards shall be used. GBT 348Q-1997 GB/T10062-19BB JB/T6609-1993 This standard is defined as follows. 3.1 Calculation of bearing capacity of gears in addition to the actual working time. Calculation method of bearing capacity of gears. Machine tool steel and heat treatment. Heat the steel parts to 4°C, keep them below the phase change temperature, and then cool them slowly. The purpose is to eliminate internal stress and calculate the size of parts. According to the different heating degrees, it is divided into low temperature aging and high temperature aging. 3.2 Vibration aging
Make the metal as hard as possible and hold together to stabilize the size of the parts. 1.4 Spindle
Except for some Hui-type machine tools, the auxiliary bearing parts and end working surfaces of the main vehicle must be hardened and thinned, and the body must be treated with aging. The main shaft material and heat treatment technology are shown in Table 1. Approved by the State Machinery Industry Bureau on June 9, 1999
Implemented on January 1, 2000
Thermal Psychological Disorder
Local Fire
Feeling Section!
{Or get angry"
Salt cooking number
20M\:M
20C-N3A
CC:tssiMn
9Min2V
38CrMoAl
JRGTMOAIA
CT60K--3
JB/T50077-1999
Hot let lover's requirements
2. Main oil required part--work and lack of bearing support parts 0.8-1.F--58 or $a.8-1.tC58:
3. Low recognition effect: fine screening parts
1. T235 or T265 or 7:
2.+Testing part and bearing part CAR or G52. Hardened layer thickness is not less than 1mm (for small diameter main shaft, it can be screened as a whole, C48 or C52.11
3. Low temperature (color parts)
1.T3 spherical annealing
2. Shaft disease part T. Work without bearing support thinning G58. Effective hardening thickness is not less than 1m [for small diameter black shaft, it can be screened as a whole, C58
3. Le standard aging (precision parts)
1. T235T2652;
2 [9,4—850 ohm[0.5850
3. Low aging (precision parts)
[. T233 Class Z:
(Closed skin 2D0-240HBS
Treatment: The following are the meanings of the heat treatment and war to the evil resolution of the old TGG09, 4.1 and the deep dynamic shaft with the shaft
extension of the overall sinking parts, three positions
(15cm is better:
1. Good performance;
2. Low production cost:
3. Ability to withstand changes, shocks, and good performance:
2. The maximum surface torsion after "addition" is 0.92-
3. The overall economic + bearing bearing performance difference
2. Anti-combination strength record, six easy "drag
3. Add 1 after separation and roughness R||tt || can reach 0.04,m:
! : Low production cost;
2 Only for part of the bed
, it is appropriate to use latent carbonization or layer rolling. Large diameter carburized shafts are made of high-metallic steel with high carburizing hardening layer depth. The rear shaft is generally made of medium carbon steel. For high hardness requirements, high carbon alloys are used. For example, 4.2, the shaft of the stepping bearing is made of commercial main oil. For low requirements, carburized shafts or high-temperature alloy shafts can also be used. The material of the bearing is selected from Cusr10Pl, zcub35 or zcnSn62.n6rb3. The high-heavy shaft can choose high-carbon alloys. 2
4.3 The main shaft matched with T type
.FR/T 50077—1999
Refer to the main technology of the case, 5 Guide wheel pair
5.1 Sliding guide rail
The sliding seat surface must be made of resistant steel. According to the different guide rail materials, it can be divided into 2 types. 5.1.1 Cast guide rail
Cast iron guide rail material and heat treatment technology see 2. The guide rail that needs to be scraped can be made of resistant steel. The guide rail can be made of resistant steel. The guide rail that has been pounded should be treated with heat aging or dynamic aging. It is only suitable for cast iron. Table 2
Good quality
Original teaching
Tax casting
Study and other items
MTPCJTi253
MTIAJTiRG
MTP25t
MTVI25H
MTYT5300
MTCrMoCu250
MTCTMoCu300
MC.r.MnCe35C
CTCrCu250
MTCrCu300
MICrcu350
Abandoned baking chain iron
(Control strength 250-||tt ||35GMPa)
Deep point strength sample
1Tensile strength 250-
350MPa)
QT500—1
QT6400—3
Heat treatment technical requirements
High group rescue or vibration or aging
Avoid fire or flame rate inflammation
Ning material clothing less than HS
or HS, 1 effective aging layer depth
not less than 1.5m from the account
times is not less than U.8m)
Connect motor heat, sheep
Meet relevant current requirements
High temperature aging or standard dynamic drinking
Net actual cable is not considered fire.
To chain work: its long-term pursuit
School-level brand-name fire parts alternate:
To non-rust fire parts: high aging
or dynamic aging
filled with light-reducing fluoroethylene Ning rail is relatively
and the main pool is obviously sent from the low-grade
, the wear-resistant cast iron
guide muscle and can be allowed to fire:
3. Good love:
4 bearing or energy:
adhesion pit filled with four-in-one
rail soft belt is generally small
about IMPa:
When the iron guide rail section
the cost is greater than 1.5 MPa
1. Good control resistance:
2. Good operating performance:
filled with four-in-one weaving machine! 3. Bearing or energy: belt:
IIT250
block filling bottle B guide is relatively
block research four-in-one B guide rail soft
HT200:
bonding filling polytetraethylene
early chaos soft belt guide agent glue
not more than one "MPE:
please iron guide machine not more than one
dry 1.5MPa
1 can be added:
2. Make a section:
3.The anti-damage performance is slightly improved
1. High scrap:
2. Final fire treatment and good tightness
The anti-damage performance is good:
3. Non-fire parts can be further processed
5.1.2 Remote steel guide rail
IE/T S0077—1999
The requirements for quick-release guide rail materials and pad treatment techniques are shown in Table 3. : Wear-resistant high-speed drill bits with complex shapes and easy deformation by heat treatment should be treated with nitrogen reduction. The guide rail should be treated with annealing treatment: surface heat treatment GCETSSIM: (or surface annealing), 60 CrVA, 50 CrVA, 3 REMeAI. 5.2 Deep dynamic guide new technology requirements 1. Spheroidizing: 2C58 or G58, effective hardening layer not less than 1.5mm 3 low humidity aging 3. 2 or T235: 2. G56 or C56, effective hardening layer concentration not less than 15mm 3. Low temperature aging 2 x1.4(.58 $1.4G58
3.Low-deep aging
1.T235 or T265 or Z;
2.0.5-850
Rolling must be hardened
Matching
1.Pin guide:
Soft recommendation:
HT200:
2. Rolling rail:
GCr15 f C60:
Motor body
Filled with tetraethylene glycol
Soft belt:
HT2(K0;
H125U;
! [. No guide:
Filled with polytetrafluoroethylene
Soft belt:
HT250:
HT300;
2. Guide rail:
GCr1s f cG:
Deep motor body
Filled with polytetrafluoroethylene
Soft belt:
HT200;
1. Good separation of fusion and glandular defect,
2. Good rigidity:
3. Good anti-injury performance:
1 Dynamic guide bearing capacity:
Soft belt matching is not greater than 1MP
, and the reading will be greater than 1.5 MPa
[, good integrity:
2. Good anti-injury performance:
3. Requirement of current-carrying force and dynamic guide system:
4. A limit guide needle
1 Research strength;
2 Tightness resistance:
3. Anti-scratch performance;
Bearing capacity can be compared with
【Brightness:
2 Anti-scratch performance is slightly good:
3. Thermal management shape:
Capacity
5.Generally speaking, the material and heat treatment technical requirements of the guide rail are shown in Table 3, and bearing steel is preferred. Except for special deformation-prone guide rails, the guide rail surface is not recommended for a period of time.
5.1 Liquid pressure-protected guide rails can be used without any opening measures during the sliding period.
The external hydrostatic elasticity and heat treatment technical requirements are shown in Table 4. The guide rail surface is not allowed to have loose defects such as life defects. Select according to the high degree requirement of small soft station structure, material brand, JrT300, 5.4 Technical requirements for gas pressure guide load, medicine treatment environment, complete starting time or dynamic time, 1. T215 or T235 or Z; 2. Low aging, dynamic surface should generally adopt anti-aging measures, gas according to static pressure guide material and heat treatment technical requirements according to Table 3. 6 Screw pair
Moving screw
Matching series
Auxiliary teaching belt:
Silver material:
ZCuSntOP1:
27nA110
6.1.1 General requirements (7 warp and below) Sliding screw materials and heat treatment technology requirements see special 5, 1 frequency adjustment, light grinding should be used to avoid corrosion (hydrogen carbon potential etc. surface treatment or rate fire general wire can be used elastic or normalized treatment 5
Normalizing air lubrication certificate
Happy light guest
Material science missing
YEACMnV
YE45MnV
I TIOA
YF40MnY
YFAsMuV
42CrMo
Heat treatment type technology fee
Z or T235
1215T235
1.2 or T235:
2. Oxygen content depends on its surface, and the hardness is not less than T480HV
1. Z T235:
2.C42 or G48
ZCuSn6Zn6Pb3
ZCALOPe3
ZCnAI10-5
1 Medium steel crushing, high carbon content
good variety:
2 Cattle production car is relatively good
1 Production is relatively light;
2 Road combination index is good:
3 After treatment, it is not suitable for indoor market machine! !
Recommended for! City below
1. Light
27 Extreme cylinder with liver end water protection
Certification:
3 Data and print length below 1m ||tt ||Let: Heat treatment technology refers to the screw thread part. The square head and shaft of the bearing are generally C42G4B, JBTSOOU
61.2 fine (6 and valley grade 1. The material and heat treatment technical requirements of the sliding column are shown in Table 6. Special requirements for heat resistance: 38CTM041 steel is selected for the wire that is easy to deform or heat-resistant. Generally, the lead screw is used. The lead screw is only used in the occasions where the work is not bottled or the load is small.
Special
38CrMoAl
Heat treatment technical requirements
1. Spheroidizing aging table:
2.56 or G16
3. Low group aging
2. D.4850
1.2 or T235
2. Low permeability;
20CIMnTiX0.4bUO:
35CrMoDL.4550
1.T215 or T235:
2. Fluorine aging
Matching pair
7CuSmG
ZCuSuGZntPb3
ZCWAll0Fe3
Attached state lamp:
2. Good quality of product quality:
3. Anti-1 rate and high stress resistance
performance. 1. Heat treatment: 2. Heat treatment performance is good, and the precision can be achieved. 6.1.3 The nuts matched with floating wires are usually made of cast zinc alloy ZcuSn6Zn6Pb3 or zCu5n10Fl, and cast zinc alloy 22nA1E0-5 or heat treatment iron can also be used. For lower speed, 2CuA110Fe3 can be used, and low-speed and light-load nut can be selected, such as gray cast iron or resistant cast iron.
6.2 Rolling screw
Rolling screw materials and heat treatment technology requirements are shown in Table 7. Bearing steel is suitable for precision rolling screws. Low precision special screws can be selected. 60-feet heat treatment of hollow ball screws (such as hollow wire books) is preferred to use nitriding steel. Table?
Heat treatment category
Steel surface heat treatment
{or rate heat treatment)
Material brand
GCr15SEMn
3aCrMeAl
Heat treatment technology requirements
2. 8 core 58, effective
Quality depth is not less than nn
3 Cold treatment:
4. Low overflow aging
2. G58 or c58. Liquid treatment-effective
Scalding depth is medium 5! m
GCM15 (C58)
GC:15SiMn : C58
1.Energy-saving strength:
2.Good performance:
3.Good size and stability
1.High contact resistance:
2.Good performance
1.The best pass limit number is:
2. Time sensitivity 0:
3. Size:
4. Heat treatment index
JBCT50077-1999
7. ! The gear material and heat treatment technology requirements are shown in Table 8. The gears treated with nitrogen and nitrided wire: The effective net carbon conversion layer depth and penetration depth are shown in Table 9 and Table 10 respectively. The gear material and heat treatment should be used according to the gear load conditions. For gears subjected to two-way load, the maximum bending stress of the gear is multiplied by 0.7. When the bending stress and contact stress are not compatible, the bending stress should be given priority. Table B
Gear category
Nanyifu
Tenth grade civil load
4Low load and
Normal load
Working conditions
3.S[I- 4IIM2u
Modification force:
C,=12M-1 40GMPa
Maximum height of tooth:
3(-:35VPu
Flashing force hardness stress:
C,10K0~1200MP
Long micro bending stress:
F=21K- 3MP:
Anti-reshaping treatment:
e,=6n- LnPs
The gear should be removed from the large set:
n20UMPa
Southern large connection:
Ayshitke MPa
2CrMrTiH
20CrMnTibzxz.net
12C:rNi3A
20IMnTiH
20co1j
2DCrMo
tSC'rMn
3BCYMDAI
15C:Mn
42CrMs
4Uk :rH
42CrMa
426?rMri
35CtMa
.TTT300
About the rubber requirements
Design: Kean GRM8 and 1G2 specifications.
Heat treatment requirements
2.To—C58, effectively remove
depth 0.3-40.8mm
2. Sc58 or SG58
2. 8C58 or 5C58
Suitable range
wheel number 1.5-3 5:nm
light 15.6mm
exchange number 1-6mm exchange must range
with my mold load 1.5-6mm
1.2 or in some cases T215 free mold 1-m at the same time rate or T235
2.652 tooth effective industry layer
depth 0.5-2m
1.[219 or T235:
2. L1450, L6(
[. Z. or in some cases T211
or 1235
2. 048 or G52. Point or fill
not changed
1.T2[3 or 1235;
2.Dr0.3-5DO or girl weight micro
war grid mold size 6mml (single
Hua Huo)
mold effect of the exchange of his account
reduction number 1~mm
mold release 5-3am non-replacement
gear effect 0.5-8 mlm
account for the wheel module 1--1:mm
supply effect n.5-2.5ml, limited
small medical test
and academic module
effective carburizing hardening layer depth
JB/T 50077-1999
, the depth of the paint after treatment in the table refers to the actual depth of the finished product. Table 10
Mountain wheel cross number
Swivel wind depth shop
7.2 Gears with high surface activity (refining: 6-grade gears) should be treated with carburizing or nitriding. Gears with high resistance to moisture should be treated with nitriding, micro-carburizing or oxygen treatment. However, nitriding or oxygen-sulfurized gears should be used in situations where the impact of the gear is large.
7.3 The internal depth must be guaranteed by the machine, and the gears that cannot be processed by grinding should be treated with induction quenching (or quenching after decarburization). Alternatively, the gears can be treated with nitriding to keep the internal depth from being quenched. 6 Worm gear pair
Worm rod material heat treatment technical requirements see Table 1], clean Worm rod, its effective penetration hardening depth see Table 12-Table
Heat treatment type
, or more carbon
concentrated or sulfur
(change and rate fire!
Plate Village bullet number
t5crMr
20crMo
2uCrMnTi
38CrMoAl
4?t:rMo
42C:Mo
Heat treatment technical table change
3. Real material new benefit aging
1 1265:
2. DM.1RS0 Or [0.5—85n
1.T235 or Z:
2.D0.4—450 effect Dr00
Rat charcoal
1.T235 or spheroidizing fire:
3. Low sliding aging
2.C48 or G48 dare 1148, braised noodles
Effective chemical products deep into small less than!
Match will create
Z.CuSn10P1
ZCuSn6Zn6Pb3
Z CuAl1OFc3
Double-layer plastic
(sub-waste wheel neck
high-temperature aging treatment!
layer plastic
[reduced month strip)
1. Good density;
2. Light resistance:
3. Good impact resistance
1. Good time sensitivity:
2. Large resistance:
3. Small thermal deformation
1. Better pre-grinding:
2. 3. Small deformation after heat treatment 1. Pre-existing 2. Lightweight and light fiber: 1. High inductivity and good resistance to caulking 2. Good quality 3. Effective paint hardening layer depth JB500771999 Note: The effective paint hardening depth mentioned above refers to the actual depth of the finished product. The indexing rod and worm wheel should be made of materials and heat treated with good wear resistance and anti-caking ability, such as nitrogen (38CrM uA1), infiltrated with alloy to anneal.
Indexing worm gears are generally made of ZCuSn10P or ZCuSm6Zn6Pb3. Worms with good lubrication conditions or low-pressure worm gears can also be made of wear-resistant cast titanium.
2 Power worm and worm gear
The spiral lubrication of the dynamic cutting worm gear must be hardened. The heavy-load end rod that bears the impact is carbonized. The rod that requires high anti-glue ability and wear resistance can be treated with variable package (or nitrogen-carbon co-painting or sulfur-nitrogen-carbon co-diffusion). If the treatment piece is not processed, it is only suitable for worms with low speed (below grade): general worms can be treated with annealing (surface rolling annealing). The quenching and tempering treatment is only suitable for low speed, small and medium load worms.
Power wheel is made of tin or cast iron. 2CuSn10P1 is suitable for high-speed worm gears, 7.CuSn67.nGPb3. is suitable for medium-speed worm gears, ZCuA110Fe3 is suitable for low-speed and heavy-duty wheels. Cast titanium wheels can be used for lower loads. Heavy-duty copper wheels should use alloy molds or centrifugal wheels. Static pressure worm gears can use coated plastics. 9 Spline shaft
Spline shaft materials and heat treatment technical requirements are shown in Table 13. Spline shafts with small torque or general precision can be heat-treated (or tempered), or easy-to-cut non-quenched and tempered steel YF40MmV and YF4SMV can be used. Sliding inner wheel with high movement frequency or high precision should use compression steel; spline shafts with large torque and high mesh size should use alloy carbon steel or alloy steel. Table 13
Heat treatment
or inflammation
feeling in the heat
sheet material
YE40MnY
YE45MnY
20CeMe
2GCrMni
heat treatment technology
T215T235Z
2 upper surface 648 or G52
1T26i5:
factory painting 58
256.8c58 su.8358
1258 or 5.2G58
1.General time collapse performance:
2. Good bearing performance:
3. Low production cost
1. Good seating performance:
2. Good bearing performance
Good sound resistance:
2. Poor bearing performance
3. Front drop;
4. Good flat impact performance:
10 teeth record
JB/T50M077—1999
For teeth service, please refer to the technical requirements for heat treatment of step wheel manufacturing materials. The rack with high working frequency should be strained by the method of decompression filtration (or double reduction or nitrogen-carbon coating). The rack with low resistance can be pierced as a whole. The rack with small or large internal structure can be hardened without hardening measures. The rack with high quality should be made of free-cutting non-quenched and tempered steel YF40MnV or YF4SMnV. The housing is generally made of cast titanium and subjected to high temperature aging treatment. The housing with high requirements such as HT3(HI or HT350 is used. The housing with high requirements such as HT200 or HT250 is used. The housing with high strength requirements can be made of ductile iron QT600-3. The housing produced by Xiaobei adopts 45 pins or Q235 steel welded structure. These pins must also be subjected to high temperature aging treatment.
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