Composite processing technology of fine injection type hole
Title：
Composite processing technology of fine injection type hole
Application Number：
 200510073177
Application Date：
 2005/06/01
Announcement Date：
 2005/10/26
Pub. Date：
 2007/11/07
Publication Number：
 1686652
Announcement Number：
 100346916
Grant Date：
 2007-11-7
Granted Pub. Date：
 2007-11-7
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 B23H 5/04
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Chen Xupeng, Jia Weifu, Li Yong, Peng Liangqiang, Zhang Hong
Key Words：
 fine, injection type, hole, composite processing technology
Abstract：
 A combined technology for machining the shaped superfine spray orifices includes fine punching with the group of punching heads having different tip shapes to form the reverse conic cavities, and electrospark machining on their back to form the shaped superfine orifices.
Claim：
Priority：
PCT：
LegalStatus：

Recommend this patent:
1 2 3 4 5
Average ( 0 votes):
                                                                          Recommended Patents>>

Relevancy information



Other Patents of Same Inventor

Frequency-changing speed regulation driver by supplying power to both ends of windings of Three-phase asynchronous motor
Broadband phase-looked loop frequency synthesizer
Variable-gain amplifier
Phase-locked loop frequency synthesizer with digital coarse tuning loop
High-speed, low-ripple peak-value detector
Direct current level converter
Soft start circuit of DC/DC switching power supply with voltage compensation
Method and device for extracting high-purity rhenium from tungsten-rhenium alloy
Locking-phase loop style orthogonal signal phase calibrator
Photoelectric mixed phase-locked loop based on electric absorption regulator
Variable frequency driving device of 3KV-10KV middle-high voltage multi-level three-phase AC motor
Circuit for eliminating signal amplitude mismatch on orthogonal signal path
Appts. for setting up indoor water soil conservation model
Minisize propeller with electrolyzing water function
Method and device for preparing fuel gas from biomass/domestic garbage double bed type heat decomposition
Multi-level frequency conversion driving apparatus with energy conservation unit
Implementing method of virtual intelligent controller in SAN system
45 deg. oblique axis pumping method and pumping module for strip shaped laser crystal
Radio frequency identification marking card with silicon base integrated antenna
Portable radio frequency recognizing read-write machine
Radio frequency label based on position information and anti-conflict method
Clamping five level variable frequency driving device utilizing internal and external ring double-group rectifier bridge
Method for raising communication reliability of radio frequency identification system
Optical A/D converter based on asymmetric Mach-Zehnder modulator
Nanometer electrode and systme for perforating single cell electrically
Calibrating method of hydrogen-blended natural gas engine
Comparison and decision circuit in amplitude keying signal demodulation circuit module
Natural hydrogen mixed fuel of engine using optimized admixing hydrogen ratio



News & Events More>>

Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







Copyright 2008-2015 All Rights Reserved Patent License of China.      Designed by Easygo