JPS56162623A - Surface processing method for screw head of injection- molding machine - Google Patents

Surface processing method for screw head of injection- molding machine

Info

Publication number
JPS56162623A
JPS56162623A JP6675180A JP6675180A JPS56162623A JP S56162623 A JPS56162623 A JP S56162623A JP 6675180 A JP6675180 A JP 6675180A JP 6675180 A JP6675180 A JP 6675180A JP S56162623 A JPS56162623 A JP S56162623A
Authority
JP
Japan
Prior art keywords
screw head
screw
head
molding machine
steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6675180A
Other languages
Japanese (ja)
Other versions
JPS5824487B2 (en
Inventor
Zenichi Mochizuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shibaura Machine Co Ltd
Original Assignee
Toshiba Machine Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Machine Co Ltd filed Critical Toshiba Machine Co Ltd
Priority to JP6675180A priority Critical patent/JPS5824487B2/en
Publication of JPS56162623A publication Critical patent/JPS56162623A/en
Publication of JPS5824487B2 publication Critical patent/JPS5824487B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58—Details
    • B29C45/60—Screws

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE:To obtain the captioned head with improved fatigue strength by forming a screw head of a specific material, then hardening the entier head and annealing the conic part and the crew part separately. CONSTITUTION:A screw head 4 is formed with either of alloy tool steel, high- speed steel, stainless steel and malaging steel. Next, this screw head 4 is once hardened and then the temperature of the conic part 4a of the screw head 4 is lower- ed (e.g., 200-400 deg.C). While the temperature of the screw part 4b is increased (e.g., 580-700 deg.C) and annealed. In addition, the screw part 4b is nitrized. Thus the screw head 4 of an injection molding machine is obtained. The conic part 4a will have high wear resistance and corrosion resistance. At the same time, the screw part 4b will have improved fatigue strength.
JP6675180A 1980-05-20 1980-05-20 Surface treatment method for screw head of injection molding machine Expired JPS5824487B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6675180A JPS5824487B2 (en) 1980-05-20 1980-05-20 Surface treatment method for screw head of injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6675180A JPS5824487B2 (en) 1980-05-20 1980-05-20 Surface treatment method for screw head of injection molding machine

Publications (2)

Publication Number Publication Date
JPS56162623A true JPS56162623A (en) 1981-12-14
JPS5824487B2 JPS5824487B2 (en) 1983-05-21

Family

ID=13324892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6675180A Expired JPS5824487B2 (en) 1980-05-20 1980-05-20 Surface treatment method for screw head of injection molding machine

Country Status (1)

Country Link
JP (1) JPS5824487B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102371204A (en) * 2010-08-24 2012-03-14 中国石油化工股份有限公司 Method for crushing and puffing plant fibrous raw material
CN110468369A (en) * 2018-05-09 2019-11-19 国联螺丝工业股份有限公司 300 series stainless steel screw fasteners nitridation heat treatment processing procedure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59213956A (en) * 1983-05-18 1984-12-03 Toyoda Autom Loom Works Ltd Compressor
JPS601389A (en) * 1983-06-16 1985-01-07 Toyoda Autom Loom Works Ltd Low-discharge-pulsation compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102371204A (en) * 2010-08-24 2012-03-14 中国石油化工股份有限公司 Method for crushing and puffing plant fibrous raw material
CN110468369A (en) * 2018-05-09 2019-11-19 国联螺丝工业股份有限公司 300 series stainless steel screw fasteners nitridation heat treatment processing procedure

Also Published As

Publication number Publication date
JPS5824487B2 (en) 1983-05-21

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